version 1.66, 2005/09/30 02:20:06 |
version 1.86, 2005/10/26 23:43:23 |
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* DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE, |
* DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE, |
* PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE. |
* PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE. |
* |
* |
* $OpenXM: OpenXM_contrib2/asir2000/builtin/strobj.c,v 1.65 2005/09/30 01:35:25 noro Exp $ |
* $OpenXM: OpenXM_contrib2/asir2000/builtin/strobj.c,v 1.85 2005/10/26 11:07:50 noro Exp $ |
*/ |
*/ |
#include "ca.h" |
#include "ca.h" |
#include "parse.h" |
#include "parse.h" |
Line 63 struct TeXSymbol { |
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Line 63 struct TeXSymbol { |
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char *symbol; |
char *symbol; |
}; |
}; |
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#define OPNAME(f) (((ARF)FA0(f))->name[0]) |
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#define IS_ZERO(f) (((f)->id==I_FORMULA) && FA0(f)==0 ) |
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#define IS_BINARYPWR(f) (((f)->id==I_BOP) &&(OPNAME(f)=='^')) |
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#define IS_NARYADD(f) (((f)->id==I_NARYOP) &&(OPNAME(f)=='+')) |
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#define IS_NARYMUL(f) (((f)->id==I_NARYOP) &&(OPNAME(f)=='*')) |
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extern char *parse_strp; |
extern char *parse_strp; |
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void Psprintf(); |
void Psprintf(); |
Line 77 void Pquotetotex_tb(); |
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Line 83 void Pquotetotex_tb(); |
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void Pquotetotex(); |
void Pquotetotex(); |
void Pquotetotex_env(); |
void Pquotetotex_env(); |
void Pflatten_quote(); |
void Pflatten_quote(); |
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void Pquote_is_integer(),Pquote_is_rational(),Pquote_is_number(); |
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void Pquote_is_dependent(),Pquote_is_function(); |
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void Pquote_normalize(); |
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void Pquote_normalize_comp(); |
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void Pquote_to_funargs(),Pfunargs_to_quote(),Pget_function_name(); |
void Pquote_to_funargs(),Pfunargs_to_quote(),Pget_function_name(); |
void Pquote_unify(),Pget_quote_id(); |
void Pquote_unify(),Pget_quote_id(),Pquote_match_rewrite(); |
void Pquote_to_nary(),Pquote_to_bin(); |
void Pquote_to_nary(),Pquote_to_bin(); |
void do_assign(NODE arg); |
void do_assign(NODE arg); |
void fnodetotex_tb(FNODE f,TB tb); |
void fnodetotex_tb(FNODE f,TB tb); |
Line 107 struct ftab str_tab[] = { |
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Line 119 struct ftab str_tab[] = { |
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{"tb_to_string",Ptb_to_string,1}, |
{"tb_to_string",Ptb_to_string,1}, |
{"string_to_tb",Pstring_to_tb,1}, |
{"string_to_tb",Pstring_to_tb,1}, |
{"get_quote_id",Pget_quote_id,1}, |
{"get_quote_id",Pget_quote_id,1}, |
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{"quote_is_number",Pquote_is_number,1}, |
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{"quote_is_rational",Pquote_is_rational,1}, |
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{"quote_is_integer",Pquote_is_integer,1}, |
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{"quote_is_function",Pquote_is_function,1}, |
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{"quote_is_dependent",Pquote_is_dependent,2}, |
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{"quote_normalize",Pquote_normalize,-2}, |
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{"quote_normalize_comp",Pquote_normalize_comp,2}, |
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{"quote_to_nary",Pquote_to_nary,1}, |
{"quote_to_nary",Pquote_to_nary,1}, |
{"quote_to_bin",Pquote_to_bin,2}, |
{"quote_to_bin",Pquote_to_bin,2}, |
{"quotetotex_tb",Pquotetotex_tb,2}, |
{"quotetotex_tb",Pquotetotex_tb,2}, |
Line 115 struct ftab str_tab[] = { |
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Line 137 struct ftab str_tab[] = { |
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{"flatten_quote",Pflatten_quote,-2}, |
{"flatten_quote",Pflatten_quote,-2}, |
{"quote_to_funargs",Pquote_to_funargs,1}, |
{"quote_to_funargs",Pquote_to_funargs,1}, |
{"quote_unify",Pquote_unify,2}, |
{"quote_unify",Pquote_unify,2}, |
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{"quote_match_rewrite",Pquote_match_rewrite,-4}, |
{"funargs_to_quote",Pfunargs_to_quote,1}, |
{"funargs_to_quote",Pfunargs_to_quote,1}, |
{"get_function_name",Pget_function_name,1}, |
{"get_function_name",Pget_function_name,1}, |
{0,0,0}, |
{0,0,0}, |
Line 512 void Pwrite_to_tb(NODE arg,Q *rp) |
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Line 535 void Pwrite_to_tb(NODE arg,Q *rp) |
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*rp = 0; |
*rp = 0; |
} |
} |
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FNODE partial_eval(FNODE), quote_to_nary(FNODE), quote_to_bin(FNODE,int); |
FNODE partial_eval(FNODE), fnode_to_nary(FNODE), fnode_to_bin(FNODE,int); |
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void Pquote_to_nary(NODE arg,QUOTE *rp) |
void Pquote_to_nary(NODE arg,QUOTE *rp) |
{ |
{ |
FNODE f; |
FNODE f; |
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f = quote_to_nary(BDY((QUOTE)ARG0(arg))); |
f = fnode_to_nary(BDY((QUOTE)ARG0(arg))); |
MKQUOTE(*rp,f); |
MKQUOTE(*rp,f); |
} |
} |
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Line 528 void Pquote_to_bin(NODE arg,QUOTE *rp) |
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Line 551 void Pquote_to_bin(NODE arg,QUOTE *rp) |
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int direction; |
int direction; |
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direction = QTOS((Q)ARG1(arg)); |
direction = QTOS((Q)ARG1(arg)); |
f = quote_to_bin(BDY((QUOTE)ARG0(arg)),direction); |
f = fnode_to_bin(BDY((QUOTE)ARG0(arg)),direction); |
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MKQUOTE(*rp,f); |
MKQUOTE(*rp,f); |
} |
} |
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void Pquote_is_number(NODE arg,Q *rp) |
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{ |
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QUOTE q; |
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int ret; |
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q = (QUOTE)ARG0(arg); |
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asir_assert(q,O_QUOTE,"quote_is_number"); |
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ret = fnode_is_number(BDY(q)); |
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STOQ(ret,*rp); |
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} |
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void Pquote_is_rational(NODE arg,Q *rp) |
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{ |
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QUOTE q; |
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int ret; |
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q = (QUOTE)ARG0(arg); |
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asir_assert(q,O_QUOTE,"quote_is_rational"); |
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ret = fnode_is_rational(BDY(q)); |
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STOQ(ret,*rp); |
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} |
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void Pquote_is_integer(NODE arg,Q *rp) |
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{ |
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QUOTE q; |
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int ret; |
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q = (QUOTE)ARG0(arg); |
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asir_assert(q,O_QUOTE,"quote_is_integer"); |
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ret = fnode_is_integer(BDY(q)); |
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STOQ(ret,*rp); |
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} |
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void Pquote_is_function(NODE arg,Q *rp) |
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{ |
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QUOTE q; |
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int ret; |
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q = (QUOTE)ARG0(arg); |
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asir_assert(q,O_QUOTE,"quote_is_function"); |
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if ( q->id == I_FUNC || q->id == I_IFUNC ) |
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ret = 1; |
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else |
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ret = 0; |
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STOQ(ret,*rp); |
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} |
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void Pquote_is_dependent(NODE arg,Q *rp) |
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{ |
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P x; |
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QUOTE q,v; |
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int ret; |
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V var; |
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q = (QUOTE)ARG0(arg); |
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v = (QUOTE)ARG1(arg); |
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asir_assert(q,O_QUOTE,"quote_is_dependent"); |
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asir_assert(v,O_QUOTE,"quote_is_dependent"); |
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x = (P)eval(BDY(v)); |
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if ( !x || OID(x) != O_P ) |
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*rp = 0; |
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var = VR(x); |
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ret = fnode_is_dependent(BDY(q),var); |
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STOQ(ret,*rp); |
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} |
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void Pquote_unify(NODE arg,Q *rp) |
void Pquote_unify(NODE arg,Q *rp) |
{ |
{ |
FNODE f,g; |
FNODE f,g; |
Line 547 void Pquote_unify(NODE arg,Q *rp) |
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Line 637 void Pquote_unify(NODE arg,Q *rp) |
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ret = quote_unify((Obj)q,(Obj)ARG1(arg),&r); |
ret = quote_unify((Obj)q,(Obj)ARG1(arg),&r); |
#else |
#else |
obj = (Obj)ARG0(arg); |
obj = (Obj)ARG0(arg); |
if ( !obj || OID(obj) != O_QUOTE) { |
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objtoquote(obj,&q); obj = (Obj)q; |
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} |
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ret = quote_unify(obj,(Obj)ARG1(arg),&r); |
ret = quote_unify(obj,(Obj)ARG1(arg),&r); |
#endif |
#endif |
if ( ret ) { |
if ( ret ) { |
Line 559 void Pquote_unify(NODE arg,Q *rp) |
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Line 646 void Pquote_unify(NODE arg,Q *rp) |
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*rp = 0; |
*rp = 0; |
} |
} |
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FNODE rewrite_fnode(FNODE,NODE); |
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extern Obj VOIDobj; |
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void Pquote_match_rewrite(NODE arg,Obj *rp) |
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{ |
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FNODE f,g,h,c,value; |
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Obj obj; |
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QUOTE q; |
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NODE r,t,s,s0,pair; |
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int ret,ind,ac; |
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obj = (Obj)ARG0(arg); |
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ret = quote_unify(obj,(Obj)ARG1(arg),&r); |
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if ( ret ) { |
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for ( t = r, s0 = 0; t; t = NEXT(t) ) { |
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NEXTNODE(s0,s); |
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pair = BDY((LIST)BDY(t)); |
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ind = (int)FA0((FNODE)BDY((QUOTE)BDY(pair))); |
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value = BDY((QUOTE)(BDY(NEXT(pair)))); |
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BDY(s) = mknode(2,ind,value); |
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} |
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if ( s0 ) NEXT(s) = 0; |
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switch ( ac = argc(arg) ) { |
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case 3: |
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h = rewrite_fnode(BDY((QUOTE)ARG2(arg)),s0); |
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MKQUOTE(q,h); *rp = (Obj)q; |
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break; |
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case 4: |
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c = rewrite_fnode(BDY((QUOTE)ARG2(arg)),s0); |
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if ( eval(c) ) { |
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h = rewrite_fnode(BDY((QUOTE)ARG3(arg)),s0); |
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MKQUOTE(q,h); *rp = (Obj)q; |
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} else |
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*rp = VOIDobj; |
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break; |
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default: |
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error("quote_match_rewrite : invalid argument"); |
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} |
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} else |
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*rp = VOIDobj; |
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} |
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void do_assign(NODE arg) |
void do_assign(NODE arg) |
{ |
{ |
NODE t,pair; |
NODE t,pair; |
Line 683 int quote_unify(Obj f, Obj pat, NODE *rp) |
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Line 813 int quote_unify(Obj f, Obj pat, NODE *rp) |
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QUOTE q; |
QUOTE q; |
FNODE g; |
FNODE g; |
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if ( OID(pat) == O_LIST ) { |
if ( !f ) |
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if ( !pat ) { |
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*rp = 0; return 1; |
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} else |
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return 0; |
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else if ( OID(pat) == O_LIST ) { |
if ( OID(f) == O_LIST ) |
if ( OID(f) == O_LIST ) |
return quote_unify_node(BDY((LIST)f),BDY((LIST)pat),rp); |
return quote_unify_node(BDY((LIST)f),BDY((LIST)pat),rp); |
else |
else |
return 0; |
return 0; |
} else if ( OID(pat) == O_QUOTE ) { |
} else if ( OID(pat) == O_QUOTE ) { |
if ( OID(f) != O_QUOTE ) return 0; |
pid = ((FNODE)BDY((QUOTE)pat))->id; |
get_quote_id_arg((QUOTE)pat,&pid,&parg); |
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get_quote_id_arg((QUOTE)f,&id,&farg); |
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switch ( pid ) { |
switch ( pid ) { |
case I_FORMULA: |
case I_FORMULA: |
if ( compquote(CO,f,pat) ) |
if ( compquote(CO,f,pat) ) |
return 0; |
return 0; |
else { |
else { |
*rp = 0; |
*rp = 0; return 1; |
return 1; |
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} |
} |
break; |
break; |
case I_LIST: |
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return quote_unify_node(BDY((LIST)BDY(farg)), |
case I_LIST: case I_CONS: |
BDY((LIST)BDY(parg)),rp); |
get_quote_id_arg((QUOTE)pat,&pid,&parg); |
case I_CONS: |
if ( OID(f) == O_LIST ) |
tf = BDY((LIST)BDY(farg)); |
tf = BDY((LIST)f); |
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else if ( OID(f) == O_QUOTE |
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&& ((FNODE)BDY((QUOTE)f))->id == pid ) { |
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get_quote_id_arg((QUOTE)f,&id,&farg); |
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tf = BDY((LIST)BDY(farg)); |
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} else |
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return 0; |
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tp = BDY((LIST)BDY(parg)); |
tp = BDY((LIST)BDY(parg)); |
rpat = (Obj)BDY(NEXT(parg)); |
if ( pid == I_LIST ) |
return quote_unify_cons(tf,tp,rpat,rp); |
return quote_unify_node(tf,tp,rp); |
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else { |
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rpat = (Obj)BDY(NEXT(parg)); |
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return quote_unify_cons(tf,tp,rpat,rp); |
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} |
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case I_PVAR: |
case I_PVAR: |
/* [[pat,f]] */ |
/* [[pat,f]] */ |
r = mknode(2,pat,f); MKLIST(l,r); |
r = mknode(2,pat,f); MKLIST(l,r); |
*rp = mknode(1,l); |
*rp = mknode(1,l); |
return 1; |
return 1; |
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case I_IFUNC: |
case I_IFUNC: |
/* F(X,Y,...) = ... */ |
/* F(X,Y,...) = ... */ |
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get_quote_id_arg((QUOTE)f,&id,&farg); |
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get_quote_id_arg((QUOTE)pat,&pid,&parg); |
if ( id == I_FUNC ) { |
if ( id == I_FUNC ) { |
r = mknode(2,BDY(parg),BDY(farg)); MKLIST(l,r); |
r = mknode(2,BDY(parg),BDY(farg)); MKLIST(l,r); |
head = mknode(1,l); |
head = mknode(1,l); |
Line 726 int quote_unify(Obj f, Obj pat, NODE *rp) |
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Line 873 int quote_unify(Obj f, Obj pat, NODE *rp) |
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} else |
} else |
return 0; |
return 0; |
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case I_NARYOP: |
case I_NARYOP: case I_BOP: case I_FUNC: |
case I_BOP: |
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/* X+Y = ... */ |
/* X+Y = ... */ |
if ( compqa(CO,BDY(farg),BDY(parg)) ) return 0; |
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/* XXX converting to I_BOP */ |
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if ( ((FNODE)BDY((QUOTE)pat))->id == I_NARYOP ) { |
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g = quote_to_bin(BDY((QUOTE)pat),1); |
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MKQUOTE(q,g); |
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get_quote_id_arg((QUOTE)q,&pid,&parg); |
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} |
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if ( ((FNODE)BDY((QUOTE)f))->id == I_NARYOP ) { |
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g = quote_to_bin(BDY((QUOTE)f),1); |
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MKQUOTE(q,g); |
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get_quote_id_arg((QUOTE)q,&id,&farg); |
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} |
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return quote_unify_node(NEXT(farg),NEXT(parg),rp); |
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break; |
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case I_FUNC: |
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/* f(...) = ... */ |
/* f(...) = ... */ |
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if ( OID(f) != O_QUOTE ) return 0; |
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id = ((FNODE)BDY((QUOTE)f))->id; |
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if ( pid == I_FUNC ) |
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; |
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else { |
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/* XXX converting to I_BOP */ |
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if ( pid == I_NARYOP ) { |
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g = fnode_to_bin(BDY((QUOTE)pat),1); |
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MKQUOTE(q,g); pat = (Obj)q; |
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} |
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if ( id == I_NARYOP ) { |
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g = fnode_to_bin(BDY((QUOTE)f),1); |
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MKQUOTE(q,g); f = (Obj)q; |
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} |
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} |
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get_quote_id_arg((QUOTE)pat,&pid,&parg); |
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get_quote_id_arg((QUOTE)f,&id,&farg); |
if ( compqa(CO,BDY(farg),BDY(parg)) ) return 0; |
if ( compqa(CO,BDY(farg),BDY(parg)) ) return 0; |
return quote_unify_node(NEXT(farg),NEXT(parg),rp); |
return quote_unify_node(NEXT(farg),NEXT(parg),rp); |
break; |
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default: |
default: |
if ( pid == id ) |
if ( OID(f) != O_QUOTE ) return 0; |
return quote_unify_node(farg,parg,rp); |
id = ((FNODE)BDY((QUOTE)f))->id; |
else |
if ( id != pid ) return 0; |
return 0; |
get_quote_id_arg((QUOTE)pat,&pid,&parg); |
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get_quote_id_arg((QUOTE)f,&id,&farg); |
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return quote_unify_node(farg,parg,rp); |
} |
} |
} |
} |
} |
} |
Line 1157 void fnodetotex_tb(FNODE f,TB tb) |
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Line 1305 void fnodetotex_tb(FNODE f,TB tb) |
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/* otherwise => FA1(f), FA2(f) */ |
/* otherwise => FA1(f), FA2(f) */ |
case I_BOP: |
case I_BOP: |
opname = ((ARF)FA0(f))->name; |
opname = ((ARF)FA0(f))->name; |
if ( !strcmp(opname,"+") ) { |
switch ( opname[0] ) { |
fnodetotex_tb((FNODE)FA1(f),tb); |
case '+': |
if ( !top_is_minus((FNODE)FA2(f)) ) write_tb(opname,tb); |
fnodetotex_tb((FNODE)FA1(f),tb); |
fnodetotex_tb((FNODE)FA2(f),tb); |
if ( !top_is_minus((FNODE)FA2(f)) ) write_tb(opname,tb); |
} else if ( !strcmp(opname,"-") ) { |
fnodetotex_tb((FNODE)FA2(f),tb); |
if ( FA1(f) ) fnodetotex_tb((FNODE)FA1(f),tb); |
break; |
write_tb(opname,tb); |
case '-': |
fnodetotex_tb((FNODE)FA2(f),tb); |
if ( FA1(f) ) fnodetotex_tb((FNODE)FA1(f),tb); |
} else if ( !strcmp(opname,"*") ) { |
write_tb(opname,tb); |
fnodetotex_tb((FNODE)FA1(f),tb); |
fnodetotex_tb((FNODE)FA2(f),tb); |
write_tb(" ",tb); |
break; |
/* XXX special care for DP */ |
case '*': |
f2 = (FNODE)FA2(f); |
fnodetotex_tb((FNODE)FA1(f),tb); |
if ( f2->id == I_EV ) { |
write_tb(" ",tb); |
n = (NODE)FA0(f2); |
/* XXX special care for DP */ |
for ( i = 0; n; n = NEXT(n), i++ ) { |
f2 = (FNODE)FA2(f); |
fi = (FNODE)BDY(n); |
if ( f2->id == I_EV ) { |
if ( fi->id != I_FORMULA || FA0(fi) ) |
n = (NODE)FA0(f2); |
break; |
for ( i = 0; n; n = NEXT(n), i++ ) { |
} |
fi = (FNODE)BDY(n); |
if ( n ) |
if ( fi->id != I_FORMULA || FA0(fi) ) |
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break; |
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} |
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if ( n ) |
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fnodetotex_tb((FNODE)FA2(f),tb); |
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} else |
fnodetotex_tb((FNODE)FA2(f),tb); |
fnodetotex_tb((FNODE)FA2(f),tb); |
} else |
break; |
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case '/': |
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write_tb("\\frac{",tb); |
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fnodetotex_tb((FNODE)FA1(f),tb); |
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write_tb("} {",tb); |
fnodetotex_tb((FNODE)FA2(f),tb); |
fnodetotex_tb((FNODE)FA2(f),tb); |
} else if ( !strcmp(opname,"/") ) { |
write_tb("}",tb); |
write_tb("\\frac{",tb); |
break; |
fnodetotex_tb((FNODE)FA1(f),tb); |
case '^': |
write_tb("} {",tb); |
fnodetotex_tb((FNODE)FA1(f),tb); |
fnodetotex_tb((FNODE)FA2(f),tb); |
write_tb("^{",tb); |
write_tb("}",tb); |
fnodetotex_tb(strip_paren((FNODE)FA2(f)),tb); |
} else if ( !strcmp(opname,"^") ) { |
write_tb("} ",tb); |
fnodetotex_tb((FNODE)FA1(f),tb); |
break; |
write_tb("^{",tb); |
case '%': |
fnodetotex_tb(strip_paren((FNODE)FA2(f)),tb); |
fnodetotex_tb((FNODE)FA1(f),tb); |
write_tb("} ",tb); |
write_tb(" {\\rm mod}\\, ",tb); |
} else if ( !strcmp(opname,"%") ) { |
fnodetotex_tb((FNODE)FA2(f),tb); |
fnodetotex_tb((FNODE)FA1(f),tb); |
break; |
write_tb(" {\\rm mod}\\, ",tb); |
default: |
fnodetotex_tb((FNODE)FA2(f),tb); |
error("invalid binary operator"); |
} else |
break; |
error("invalid binary operator"); |
} |
break; |
break; |
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case I_COP: |
case I_COP: |
Line 1767 void Pfunargs_to_quote(NODE arg,QUOTE *rp) |
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Line 1924 void Pfunargs_to_quote(NODE arg,QUOTE *rp) |
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} |
} |
} |
} |
MKQUOTE(*rp,f); |
MKQUOTE(*rp,f); |
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} |
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FNODE fnode_apply(FNODE f,FNODE (*func)(),int expand); |
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FNODE fnode_normalize(FNODE f,int expand); |
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|
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void Pquote_normalize(NODE arg,QUOTE *rp) |
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{ |
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QUOTE q,r; |
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FNODE f; |
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int expand,ac; |
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|
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ac = argc(arg); |
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if ( !ac ) error("quote_normalize : invalid argument"); |
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q = (QUOTE)ARG0(arg); |
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expand = ac==2 && ARG1(arg); |
|
if ( !q || OID(q) != O_QUOTE ) { |
|
*rp = q; |
|
return; |
|
} else { |
|
f = fnode_normalize(BDY(q),expand); |
|
MKQUOTE(r,f); |
|
*rp = r; |
|
} |
|
} |
|
|
|
void Pquote_normalize_comp(NODE arg,Q *rp) |
|
{ |
|
FNODE f1,f2; |
|
int r; |
|
|
|
f1 = BDY((QUOTE)ARG0(arg)); |
|
f2 = BDY((QUOTE)ARG1(arg)); |
|
f1 = fnode_normalize(f1,0); |
|
f2 = fnode_normalize(f2,0); |
|
r = fnode_normalize_comp(f1,f2); |
|
STOQ(r,*rp); |
|
} |
|
|
|
int fnode_is_number(FNODE f) |
|
{ |
|
Obj obj; |
|
|
|
switch ( f->id ) { |
|
case I_MINUS: case I_PAREN: |
|
return fnode_is_number(FA0(f)); |
|
|
|
case I_FORMULA: |
|
obj = FA0(f); |
|
if ( !obj ) return 1; |
|
else if ( OID(obj) == O_QUOTE ) |
|
return fnode_is_number(BDY((QUOTE)obj)); |
|
else if ( NUM(obj) ) return 1; |
|
else return 0; |
|
|
|
case I_BOP: |
|
return fnode_is_number(FA1(f)) && fnode_is_number(FA2(f)); |
|
|
|
default: |
|
return 0; |
|
} |
|
} |
|
|
|
int fnode_is_rational(FNODE f) |
|
{ |
|
Obj obj; |
|
|
|
switch ( f->id ) { |
|
case I_MINUS: case I_PAREN: |
|
return fnode_is_number(FA0(f)); |
|
|
|
case I_FORMULA: |
|
obj = FA0(f); |
|
if ( !obj ) return 1; |
|
else if ( OID(obj) == O_QUOTE ) |
|
return fnode_is_rational(BDY((QUOTE)obj)); |
|
else if ( NUM(obj) && RATN(obj) ) return 1; |
|
else return 0; |
|
|
|
case I_BOP: |
|
if ( !strcmp(((ARF)FA0(f))->name,"^") ) |
|
return fnode_is_rational(FA1(f)) && fnode_is_integer(FA2(f)); |
|
else |
|
return fnode_is_rational(FA1(f)) && fnode_is_rational(FA2(f)); |
|
|
|
default: |
|
return 0; |
|
} |
|
} |
|
|
|
int fnode_is_integer(FNODE f) |
|
{ |
|
Obj obj; |
|
|
|
switch ( f->id ) { |
|
case I_MINUS: case I_PAREN: |
|
return fnode_is_integer(FA0(f)); |
|
|
|
case I_FORMULA: |
|
obj = FA0(f); |
|
if ( !obj ) return 1; |
|
else if ( OID(obj) == O_QUOTE ) |
|
return fnode_is_integer(BDY((QUOTE)obj)); |
|
else if ( INT(obj)) return 1; |
|
else return 0; |
|
|
|
case I_BOP: |
|
switch ( ((ARF)FA0(f))->name[0] ) { |
|
case '^': |
|
return fnode_is_integer(FA1(f)) |
|
&& fnode_is_nonnegative_integer(FA2(f)); |
|
case '/': |
|
return fnode_is_integer(FA1(f)) && |
|
( fnode_is_one(FA2(f)) || fnode_is_minusone(FA2(f)) ); |
|
default: |
|
return fnode_is_integer(FA1(f)) && fnode_is_integer(FA2(f)); |
|
} |
|
break; |
|
|
|
default: |
|
return 0; |
|
} |
|
} |
|
|
|
int fnode_is_nonnegative_integer(FNODE f) |
|
{ |
|
Q n; |
|
|
|
n = eval(f); |
|
if ( !n || (INT(n) && SGN(n) > 0) ) return 1; |
|
else return 0; |
|
} |
|
|
|
int fnode_is_one(FNODE f) |
|
{ |
|
Q n; |
|
|
|
n = eval(f); |
|
if ( UNIQ(n) ) return 1; |
|
else return 0; |
|
} |
|
|
|
int fnode_is_minusone(FNODE f) |
|
{ |
|
Q n; |
|
|
|
n = eval(f); |
|
if ( MUNIQ(n) ) return 1; |
|
else return 0; |
|
} |
|
|
|
int fnode_is_dependent(FNODE f,V v) |
|
{ |
|
Obj obj; |
|
FNODE arg; |
|
NODE t; |
|
|
|
switch ( f->id ) { |
|
case I_MINUS: case I_PAREN: |
|
return fnode_is_dependent(FA0(f),v); |
|
|
|
case I_FORMULA: |
|
obj = FA0(f); |
|
if ( !obj ) return 0; |
|
else if ( OID(obj) == O_QUOTE ) |
|
return fnode_is_dependent(BDY((QUOTE)obj),v); |
|
else if ( obj_is_dependent(obj,v) ) return 1; |
|
else return 0; |
|
|
|
case I_BOP: |
|
return fnode_is_dependent(FA1(f),v) || fnode_is_dependent(FA2(f),v); |
|
|
|
case I_FUNC: |
|
arg = (FNODE)FA1(f); |
|
for ( t = FA0(arg); t; t = NEXT(t) ) |
|
if ( fnode_is_dependent(BDY(t),v) ) return 1; |
|
return 0; |
|
|
|
default: |
|
return 0; |
|
} |
|
} |
|
|
|
FNODE fnode_normalize_add(FNODE a1,FNODE a2,int expand); |
|
FNODE fnode_normalize_mul(FNODE a1,FNODE a2,int expand); |
|
FNODE fnode_normalize_pwr(FNODE a1,FNODE a2,int expand); |
|
FNODE fnode_normalize_mul_coef(Num c,FNODE f,int expand); |
|
FNODE fnode_expand_pwr(FNODE f,int n); |
|
FNODE to_narymul(FNODE f); |
|
FNODE to_naryadd(FNODE f); |
|
FNODE fnode_node_to_naryadd(NODE n); |
|
FNODE fnode_node_to_narymul(NODE n); |
|
void fnode_base_exp(FNODE f,FNODE *bp,FNODE *ep); |
|
void fnode_coef_body(FNODE f,Num *cp,FNODE *bp); |
|
|
|
|
|
FNODE fnode_normalize(FNODE f,int expand) |
|
{ |
|
FNODE a1,a2,mone,r,b2; |
|
NODE n; |
|
Q q; |
|
|
|
STOQ(-1,q); |
|
mone = mkfnode(1,I_FORMULA,q); |
|
switch ( f->id ) { |
|
case I_PAREN: |
|
return fnode_normalize(FA0(f),expand); |
|
|
|
case I_MINUS: |
|
return fnode_normalize_mul_coef((Num)q, |
|
fnode_normalize(FA0(f),expand),expand); |
|
|
|
case I_BOP: |
|
/* arf fnode fnode */ |
|
a1 = fnode_normalize(FA1(f),expand); |
|
a2 = fnode_normalize(FA2(f),expand); |
|
switch ( OPNAME(f) ) { |
|
case '+': |
|
return fnode_normalize_add(a1,a2,expand); |
|
case '-': |
|
a2 = fnode_normalize_mul_coef((Num)q,a2,expand); |
|
return fnode_normalize_add(a1,a2,expand); |
|
case '*': |
|
return fnode_normalize_mul(a1,a2,expand); |
|
case '/': |
|
a2 = fnode_normalize_pwr(a2,mone,expand); |
|
return fnode_normalize_mul(a1,a2,expand); |
|
case '^': |
|
return fnode_normalize_pwr(a1,a2,expand); |
|
default: |
|
return mkfnode(3,I_BOP,FA0(f),a1,a2); |
|
} |
|
break; |
|
|
|
case I_NARYOP: |
|
switch ( OPNAME(f) ) { |
|
case '+': |
|
n = (NODE)FA1(f); |
|
r = fnode_normalize(BDY(n),expand); n = NEXT(n); |
|
for ( ; n; n = NEXT(n) ) { |
|
a1 = fnode_normalize(BDY(n),expand); |
|
r = fnode_normalize_add(r,a1,expand); |
|
} |
|
return r; |
|
case '*': |
|
n = (NODE)FA1(f); |
|
r = fnode_normalize(BDY(n),expand); n = NEXT(n); |
|
for ( ; n; n = NEXT(n) ) { |
|
a1 = fnode_normalize(BDY(n),expand); |
|
r = fnode_normalize_mul(r,a1,expand); |
|
} |
|
return r; |
|
default: |
|
error("fnode_normallize : cannot happen"); |
|
} |
|
|
|
default: |
|
return fnode_apply(f,fnode_normalize,expand); |
|
} |
|
} |
|
|
|
FNODE fnode_apply(FNODE f,FNODE (*func)(),int expand) |
|
{ |
|
fid_spec_p spec; |
|
FNODE r; |
|
int i,n; |
|
NODE t,t0,s; |
|
|
|
get_fid_spec(f->id,&spec); |
|
for ( n = 0; spec->type[n] != A_end; n++ ); |
|
NEWFNODE(r,n); r->id = f->id; |
|
for ( i = 0; i < n; i++ ) { |
|
switch ( spec->type[i] ) { |
|
case A_fnode: |
|
r->arg[i] = func(f->arg[i],expand); |
|
break; |
|
case A_node: |
|
s = (NODE)f->arg[i]; |
|
for ( t0 = 0; s; s = NEXT(s) ) { |
|
NEXTNODE(t0,t); |
|
BDY(t) = (pointer)func((FNODE)BDY(s),expand); |
|
} |
|
if ( t0 ) NEXT(t) = 0; |
|
r->arg[i] = t0; |
|
break; |
|
default: |
|
r->arg[i] = f->arg[i]; |
|
break; |
|
} |
|
} |
|
return r; |
|
} |
|
|
|
FNODE fnode_normalize_add(FNODE f1,FNODE f2,int expand) |
|
{ |
|
NODE n1,n2,r0,r; |
|
FNODE b1,b2; |
|
int s; |
|
Num c1,c2,c; |
|
|
|
if ( IS_ZERO(f1) ) return f2; |
|
else if ( IS_ZERO(f2) ) return f1; |
|
f1 = to_naryadd(f1); f2 = to_naryadd(f2); |
|
n1 = (NODE)FA1(f1); n2 = (NODE)FA1(f2); |
|
r0 = 0; |
|
while ( n1 && n2 ) { |
|
fnode_coef_body(BDY(n1),&c1,&b1); fnode_coef_body(BDY(n2),&c2,&b2); |
|
if ( (s = fnode_normalize_comp(b1,b2)) > 0 ) { |
|
NEXTNODE(r0,r); BDY(r) = BDY(n1); n1 = NEXT(n1); |
|
} else if ( s < 0 ) { |
|
NEXTNODE(r0,r); BDY(r) = BDY(n2); n2 = NEXT(n2); |
|
} else { |
|
addnum(0,c1,c2,&c); |
|
if ( c ) { |
|
NEXTNODE(r0,r); BDY(r) = fnode_normalize_mul_coef(c,b1,expand); |
|
} |
|
n1 = NEXT(n1); n2 = NEXT(n2); |
|
} |
|
} |
|
if ( n1 ) |
|
if ( r0 ) NEXT(r) = n1; |
|
else r0 = n1; |
|
else if ( n2 ) |
|
if ( r0 ) NEXT(r) = n2; |
|
else r0 = n2; |
|
else if ( r0 ) |
|
NEXT(r) = 0; |
|
|
|
return fnode_node_to_naryadd(r0); |
|
} |
|
|
|
FNODE fnode_node_to_naryadd(NODE n) |
|
{ |
|
if ( !n ) return mkfnode(1,I_FORMULA,0); |
|
else if ( !NEXT(n) ) return BDY(n); |
|
else return mkfnode(2,I_NARYOP,addfs,n); |
|
} |
|
|
|
FNODE fnode_node_to_narymul(NODE n) |
|
{ |
|
if ( !n ) return mkfnode(1,I_FORMULA,ONE); |
|
else if ( !NEXT(n) ) return BDY(n); |
|
else return mkfnode(2,I_NARYOP,mulfs,n); |
|
} |
|
|
|
FNODE fnode_normalize_mul(FNODE f1,FNODE f2,int expand) |
|
{ |
|
NODE n1,n2,r0,r,r1; |
|
FNODE b1,b2,e1,e2,cc,t,t1; |
|
FNODE *m; |
|
int s; |
|
Num c1,c2,c,e; |
|
int l1,l,i,j; |
|
|
|
if ( IS_ZERO(f1) || IS_ZERO(f2) ) return mkfnode(1,I_FORMULA,0); |
|
else if ( fnode_is_number(f1) ) |
|
return fnode_normalize_mul_coef((Num)eval(f1),f2,expand); |
|
else if ( fnode_is_number(f2) ) |
|
return fnode_normalize_mul_coef((Num)eval(f2),f1,expand); |
|
|
|
if ( expand && IS_NARYADD(f1) ) { |
|
t = mkfnode(1,I_FORMULA,0); |
|
for ( n1 = (NODE)FA1(f1); n1; n1 = NEXT(n1) ) { |
|
t1 = fnode_normalize_mul(BDY(n1),f2,expand); |
|
t = fnode_normalize_add(t,t1,expand); |
|
} |
|
return t; |
|
} |
|
if ( expand && IS_NARYADD(f2) ) { |
|
t = mkfnode(1,I_FORMULA,0); |
|
for ( n2 = (NODE)FA1(f2); n2; n2 = NEXT(n2) ) { |
|
t1 = fnode_normalize_mul(f1,BDY(n2),expand); |
|
t = fnode_normalize_add(t,t1,expand); |
|
} |
|
return t; |
|
} |
|
|
|
fnode_coef_body(f1,&c1,&b1); fnode_coef_body(f2,&c2,&b2); |
|
mulnum(0,c1,c2,&c); |
|
if ( !c ) return mkfnode(1,I_FORMULA,0); |
|
|
|
|
|
n1 = (NODE)FA1(to_narymul(b1)); n2 = (NODE)FA1(to_narymul(b2)); |
|
l1 = length(n1); l = l1+length(n2); |
|
m = (FNODE *)ALLOCA(l*sizeof(FNODE)); |
|
for ( r = n1, i = 0; i < l1; r = NEXT(r), i++ ) m[i] = BDY(r); |
|
for ( r = n2; r; r = NEXT(r) ) { |
|
if ( i == 0 ) |
|
m[i++] = BDY(r); |
|
else { |
|
fnode_base_exp(m[i-1],&b1,&e1); fnode_base_exp(BDY(r),&b2,&e2); |
|
if ( compfnode(b1,b2) ) break; |
|
addnum(0,eval(e1),eval(e2),&e); |
|
if ( !e ) i--; |
|
else if ( UNIQ(e) ) |
|
m[i-1] = b1; |
|
else |
|
m[i-1] = mkfnode(3,I_BOP,pwrfs,b1,mkfnode(1,I_FORMULA,e)); |
|
} |
|
} |
|
for ( j = i-1; j >= 0; j-- ) { |
|
MKNODE(r1,m[j],r); r = r1; |
|
} |
|
if ( !UNIQ(c) ) { |
|
cc = mkfnode(1,I_FORMULA,c); MKNODE(r1,cc,r); r = r1; |
|
} |
|
return fnode_node_to_narymul(r); |
|
} |
|
|
|
FNODE fnode_normalize_pwr(FNODE f1,FNODE f2,int expand) |
|
{ |
|
FNODE b,b1,e1,e,cc,r; |
|
Num c,c1; |
|
NODE arg,n; |
|
Q q; |
|
|
|
if ( IS_ZERO(f2) ) return mkfnode(1,I_FORMULA,ONE); |
|
else if ( IS_ZERO(f1) ) return mkfnode(1,I_FORMULA,0); |
|
else if ( fnode_is_one(f2) ) return f1; |
|
else if ( fnode_is_number(f1) ) |
|
if ( fnode_is_integer(f2) ) { |
|
pwrnum(0,(Num)eval(f1),(Num)eval(f2),&c); |
|
return mkfnode(1,I_FORMULA,c); |
|
} else |
|
return mkfnode(3,I_BOP,pwrfs,f1,f2); |
|
else if ( IS_BINARYPWR(f1) ) { |
|
b1 = FA1(f1); e1 = FA2(f1); |
|
e = fnode_normalize_mul(e1,f2,expand); |
|
if ( fnode_is_one(e) ) |
|
return b1; |
|
else |
|
return mkfnode(3,I_BOP,FA0(f1),b1,e); |
|
} else if ( IS_NARYMUL(f1) && fnode_is_integer(f2) ) { |
|
fnode_coef_body(f1,&c1,&b1); |
|
pwrnum(0,(Num)c1,(Num)eval(f2),&c); |
|
cc = mkfnode(1,I_FORMULA,c); |
|
b = fnode_normalize_pwr(b1,f2,expand); |
|
if ( fnode_is_one(cc) ) |
|
return b; |
|
else |
|
return fnode_node_to_narymul(mknode(2,cc,b)); |
|
} else if ( expand && fnode_is_integer(f2) |
|
&& fnode_is_nonnegative_integer(f2) ) { |
|
q = (Q)eval(f2); |
|
if ( PL(NM(q)) > 1 ) error("fnode_normalize_pwr : exponent too large"); |
|
return fnode_expand_pwr(f1,QTOS(q)); |
|
} else |
|
return mkfnode(3,I_BOP,pwrfs,f1,f2); |
|
} |
|
|
|
FNODE fnode_expand_pwr(FNODE f,int n) |
|
{ |
|
int n1; |
|
FNODE f1,f2; |
|
|
|
if ( !n ) return mkfnode(1,I_FORMULA,ONE); |
|
else if ( IS_ZERO(f) ) return mkfnode(1,I_FORMULA,0); |
|
else if ( n == 1 ) return f; |
|
else { |
|
n1 = n/2; |
|
f1 = fnode_expand_pwr(f,n1); |
|
f2 = fnode_normalize_mul(f1,f1,1); |
|
if ( n%2 ) f2 = fnode_normalize_mul(f2,f,1); |
|
return f2; |
|
} |
|
} |
|
|
|
/* f = b^e */ |
|
void fnode_base_exp(FNODE f,FNODE *bp,FNODE *ep) |
|
{ |
|
if ( IS_BINARYPWR(f) ) { |
|
*bp = FA1(f); *ep = FA2(f); |
|
} else { |
|
*bp = f; *ep = mkfnode(1,I_FORMULA,ONE); |
|
} |
|
} |
|
|
|
FNODE to_naryadd(FNODE f) |
|
{ |
|
FNODE r; |
|
NODE n; |
|
|
|
if ( IS_NARYADD(f) ) return f; |
|
|
|
NEWFNODE(r,2); r->id = I_NARYOP; |
|
FA0(r) = addfs; MKNODE(n,f,0); FA1(r) = n; |
|
return r; |
|
} |
|
|
|
FNODE to_narymul(FNODE f) |
|
{ |
|
FNODE r; |
|
NODE n; |
|
|
|
if ( IS_NARYMUL(f) ) return f; |
|
|
|
NEWFNODE(r,2); r->id = I_NARYOP; |
|
FA0(r) = mulfs; MKNODE(n,f,0); FA1(r) = n; |
|
return r; |
|
} |
|
|
|
FNODE fnode_normalize_mul_coef(Num c,FNODE f,int expand) |
|
{ |
|
FNODE b1,cc; |
|
Num c1,c2; |
|
NODE n,r,r0; |
|
|
|
if ( !c ) |
|
return mkfnode(I_FORMULA,0); |
|
else { |
|
fnode_coef_body(f,&c1,&b1); |
|
mulnum(0,c,c1,&c2); |
|
if ( UNIQ(c2) ) return b1; |
|
else { |
|
cc = mkfnode(1,I_FORMULA,c2); |
|
if ( fnode_is_number(b1) ) { |
|
if ( !fnode_is_one(b1) ) |
|
error("fnode_normalize_mul_coef : cannot happen"); |
|
else |
|
return cc; |
|
} else if ( IS_NARYMUL(b1) ) { |
|
MKNODE(n,cc,FA1(b1)); |
|
return fnode_node_to_narymul(n); |
|
} else if ( expand && IS_NARYADD(b1) ) { |
|
for ( r0 = 0, n = (NODE)FA1(b1); n; n = NEXT(n) ) { |
|
NEXTNODE(r0,r); |
|
BDY(r) = fnode_normalize_mul_coef(c2,BDY(n),expand); |
|
} |
|
if ( r0 ) NEXT(r) = 0; |
|
return fnode_node_to_naryadd(r0); |
|
} else |
|
return fnode_node_to_narymul(mknode(2,cc,b1)); |
|
} |
|
} |
|
} |
|
|
|
void fnode_coef_body(FNODE f,Num *cp,FNODE *bp) |
|
{ |
|
FNODE c; |
|
|
|
if ( fnode_is_number(f) ) { |
|
*cp = eval(f); *bp = mkfnode(1,I_FORMULA,ONE); |
|
} else if ( IS_NARYMUL(f) ) { |
|
c=(FNODE)BDY((NODE)FA1(f)); |
|
if ( fnode_is_number(c) ) { |
|
*cp = eval(c); |
|
*bp = fnode_node_to_narymul(NEXT((NODE)FA1(f))); |
|
} else { |
|
*cp = (Num)ONE; *bp = f; |
|
} |
|
} else { |
|
*cp = (Num)ONE; *bp = f; |
|
} |
|
} |
|
|
|
int fnode_normalize_comp_pwr(FNODE f1,FNODE f2); |
|
|
|
int fnode_normalize_comp(FNODE f1,FNODE f2) |
|
{ |
|
NODE n1,n2; |
|
int r,i1,i2; |
|
char *nm1,*nm2; |
|
FNODE b1,b2,e1,e2,g; |
|
Num ee,ee1,c1,c2; |
|
|
|
if ( IS_NARYADD(f1) || IS_NARYADD(f2) ) { |
|
f1 = to_naryadd(f1); f2 = to_naryadd(f2); |
|
n1 = (NODE)FA1(f1); n2 = (NODE)FA1(f2); |
|
while ( n1 && n2 ) |
|
if ( r = fnode_normalize_comp(BDY(n1),BDY(n2)) ) return r; |
|
else { |
|
n1 = NEXT(n1); n2 = NEXT(n2); |
|
} |
|
return n1?1:(n2?-1:0); |
|
} |
|
if ( IS_NARYMUL(f1) || IS_NARYMUL(f2) ) { |
|
fnode_coef_body(f1,&c1,&b1); |
|
fnode_coef_body(f2,&c2,&b2); |
|
if ( !compfnode(b1,b2) ) return compnum(0,c1,c2); |
|
b1 = to_narymul(b1); b2 = to_narymul(b2); |
|
n1 = (NODE)FA1(b1); n2 = (NODE)FA1(b2); |
|
while ( 1 ) { |
|
while ( n1 && n2 && !compfnode(BDY(n1),BDY(n2)) ) { |
|
n1 = NEXT(n1); n2 = NEXT(n2); |
|
} |
|
if ( !n1 || !n2 ) { |
|
return n1?1:(n2?-1:0); |
|
} |
|
fnode_base_exp(BDY(n1),&b1,&e1); |
|
fnode_base_exp(BDY(n2),&b2,&e2); |
|
|
|
if ( r = fnode_normalize_comp(b1,b2) ) { |
|
if ( r > 0 ) |
|
return fnode_normalize_comp(e1,mkfnode(1,I_FORMULA,0)); |
|
else if ( r < 0 ) |
|
return fnode_normalize_comp(mkfnode(1,I_FORMULA,0),e2); |
|
} else { |
|
n1 = NEXT(n1); n2 = NEXT(n2); |
|
if ( fnode_is_number(e1) && fnode_is_number(e2) ) { |
|
/* f1 = t b^e1 ... , f2 = t b^e2 ... */ |
|
subnum(0,eval(e1),eval(e2),&ee); |
|
r = compnum(0,ee,0); |
|
if ( r > 0 ) { |
|
g = mkfnode(3,I_BOP,pwrfs,b1,mkfnode(1,I_FORMULA,ee)); |
|
MKNODE(n1,g,n1); |
|
} else if ( r < 0 ) { |
|
chsgnnum(ee,&ee1); |
|
g = mkfnode(3,I_BOP,pwrfs,b1,mkfnode(1,I_FORMULA,ee1)); |
|
MKNODE(n2,g,n2); |
|
} |
|
} else { |
|
r = fnode_normalize_comp(e1,e2); |
|
if ( r > 0 ) return 1; |
|
else if ( r < 0 ) return -1; |
|
} |
|
} |
|
} |
|
} |
|
if ( IS_BINARYPWR(f1) || IS_BINARYPWR(f2) ) |
|
return fnode_normalize_comp_pwr(f1,f2); |
|
|
|
/* now, IDs of f1 and f2 must be I_FORMULA, I_FUNC, or I_PVAR */ |
|
switch ( f1->id ) { |
|
case I_FORMULA: |
|
switch ( f2->id ) { |
|
case I_FORMULA: |
|
return arf_comp(CO,FA0(f1),FA0(f2)); |
|
case I_FUNC: case I_PVAR: |
|
return -1; |
|
default: |
|
error("fnode_normalize_comp : undefined"); |
|
} |
|
break; |
|
case I_FUNC: |
|
switch ( f2->id ) { |
|
case I_FORMULA: |
|
return 1; |
|
case I_FUNC: |
|
nm1 = ((FUNC)FA0(f1))->name; nm2 = ((FUNC)FA0(f2))->name; |
|
r = strcmp(nm1,nm2); |
|
if ( r > 0 ) return 1; |
|
else if ( r < 0 ) return -1; |
|
else { |
|
/* compare args */ |
|
n1 = FA0((FNODE)FA1(f1)); n2 = FA0((FNODE)FA1(f2)); |
|
while ( n1 && n2 ) |
|
if ( r = fnode_normalize_comp(BDY(n1),BDY(n2)) ) return r; |
|
else { |
|
n1 = NEXT(n1); n2 = NEXT(n2); |
|
} |
|
return n1?1:(n2?-1:0); |
|
} |
|
break; |
|
case I_PVAR: |
|
return -1; |
|
default: |
|
error("fnode_normalize_comp : undefined"); |
|
} |
|
case I_PVAR: |
|
switch ( f2->id ) { |
|
case I_FORMULA: case I_FUNC: |
|
return 1; |
|
case I_PVAR: |
|
i1 = (int)FA0(f1); i2 = (int)FA0(f2); |
|
if ( i1 > i2 ) return 1; |
|
else if ( i1 < i2 ) return -1; |
|
else return 0; |
|
default: |
|
error("fnode_normalize_comp : undefined"); |
|
} |
|
break; |
|
default: |
|
error("fnode_normalize_comp : undefined"); |
|
} |
|
} |
|
|
|
int fnode_normalize_comp_pwr(FNODE f1,FNODE f2) |
|
{ |
|
FNODE b1,b2,e1,e2; |
|
int r; |
|
|
|
fnode_base_exp(f1,&b1,&e1); |
|
fnode_base_exp(f2,&b2,&e2); |
|
if ( r = fnode_normalize_comp(b1,b2) ) { |
|
if ( r > 0 ) |
|
return fnode_normalize_comp(e1,mkfnode(1,I_FORMULA,0)); |
|
else if ( r < 0 ) |
|
return fnode_normalize_comp(mkfnode(1,I_FORMULA,0),e2); |
|
} else return fnode_normalize_comp(e1,e2); |
} |
} |