=================================================================== RCS file: /home/cvs/OpenXM_contrib2/asir2000/engine/real.c,v retrieving revision 1.1 retrieving revision 1.12 diff -u -p -r1.1 -r1.12 --- OpenXM_contrib2/asir2000/engine/real.c 1999/12/03 07:39:08 1.1 +++ OpenXM_contrib2/asir2000/engine/real.c 2018/03/29 01:32:52 1.12 @@ -1,245 +1,243 @@ -/* $OpenXM: OpenXM/src/asir99/engine/real.c,v 1.1.1.1 1999/11/10 08:12:26 noro Exp $ */ +/* + * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED + * All rights reserved. + * + * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited, + * non-exclusive and royalty-free license to use, copy, modify and + * redistribute, solely for non-commercial and non-profit purposes, the + * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and + * conditions of this Agreement. For the avoidance of doubt, you acquire + * only a limited right to use the SOFTWARE hereunder, and FLL or any + * third party developer retains all rights, including but not limited to + * copyrights, in and to the SOFTWARE. + * + * (1) FLL does not grant you a license in any way for commercial + * purposes. You may use the SOFTWARE only for non-commercial and + * non-profit purposes only, such as academic, research and internal + * business use. + * (2) The SOFTWARE is protected by the Copyright Law of Japan and + * international copyright treaties. If you make copies of the SOFTWARE, + * with or without modification, as permitted hereunder, you shall affix + * to all such copies of the SOFTWARE the above copyright notice. + * (3) An explicit reference to this SOFTWARE and its copyright owner + * shall be made on your publication or presentation in any form of the + * results obtained by use of the SOFTWARE. + * (4) In the event that you modify the SOFTWARE, you shall notify FLL by + * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification + * for such modification or the source code of the modified part of the + * SOFTWARE. + * + * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL + * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND + * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS + * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES' + * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY + * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY. + * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT, + * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL + * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES + * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES + * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY + * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF + * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART + * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY + * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE, + * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE. + * + * $OpenXM: OpenXM_contrib2/asir2000/engine/real.c,v 1.11 2016/06/29 08:16:11 ohara Exp $ +*/ #include "ca.h" #include "base.h" #include -#if defined(THINK_C) double RatnToReal(a) Q a; { - double nm,dn,t; - int enm,edn; - char buf[BUFSIZ]; + double nm,dn,man; + int enm,edn,e; - nm = NatToReal(NM(a),&enm); - if ( INT(a) ) - if ( enm >= 1 ) - error("RatnToReal : Overflow"); - else - return SGN(a)>0 ? nm : -nm; - else { - dn = NatToReal(DN(a),&edn); - sprintf(buf,"1.0E%d",enm-edn); - sscanf(buf,"%lf",&t); - if ( SGN(a) < 0 ) - t = -t; - return nm/dn*t; - } + nm = NatToReal(NM(a),&enm); + if ( INT(a) ) + if ( enm >= 1 ) { + error("RatnToReal : Overflow"); + /* NOTREACHED */ + return 0; + } else + return SGN(a)>0 ? nm : -nm; + else { + dn = NatToReal(DN(a),&edn); + man = nm/dn; + if ( SGN(a) < 0 ) + man = -man; + if ( ((e = enm - edn) >= 1024) || (e <= -1023) ) { + error("RatnToReal : Overflow"); /* XXX */ + /* NOTREACHED */ + return 0; + } else if ( !e ) + return man; + else + return man*pow(2,e); + } } double NatToReal(a,expo) N a; int *expo; { - int *p; - int l,all,i,j,s,tb,top,tail; - unsigned int t,m[2]; - - p = BD(a); l = PL(a) - 1; - for ( top = 0, t = p[l]; t; t >>= 1, top++ ); - all = top + BSH*l; tail = (53-top)%BSH; i = l-(53-top)/BSH-1; - m[1] = i < 0 ? 0 : p[i]>>(BSH-tail); - for ( j = 1, i++, tb = tail; i <= l; i++ ) { - s = 32-tb; t = i < 0 ? 0 : p[i]; - if ( BSH > s ) { - m[j] |= ((t&((1<>s; tb = BSH-s; - } - } else { - m[j] |= (t<>= 1, top++ ); + all = top + BSH*l; tail = (53-top)%BSH; i = l-(53-top)/BSH-1; + m[1] = i < 0 ? 0 : p[i]>>(BSH-tail); + for ( j = 1, i++, tb = tail; i <= l; i++ ) { + s = 32-tb; t = i < 0 ? 0 : p[i]; + if ( BSH > s ) { + m[j] |= ((t&((1<>s; tb = BSH-s; + } + } else { + m[j] |= (t<= 1 ) - error("RatnToReal : Overflow"); - else - return SGN(a)>0 ? nm : -nm; - else { - dn = NatToReal(DN(a),&edn); - man = nm/dn; - if ( SGN(a) < 0 ) - man = -man; - if ( ((e = enm - edn) >= 1024) || (e <= -1023) ) - error("RatnToReal : Overflow"); /* XXX */ - else if ( !e ) - return man; - else - return man*pow(2,e); - } -} - -double NatToReal(a,expo) -N a; -int *expo; -{ - unsigned int *p; - int l,all,i,j,s,tb,top,tail; - unsigned int t,m[2]; - - p = BD(a); l = PL(a) - 1; - for ( top = 0, t = p[l]; t; t >>= 1, top++ ); - all = top + BSH*l; tail = (53-top)%BSH; i = l-(53-top)/BSH-1; - m[1] = i < 0 ? 0 : p[i]>>(BSH-tail); - for ( j = 1, i++, tb = tail; i <= l; i++ ) { - s = 32-tb; t = i < 0 ? 0 : p[i]; - if ( BSH > s ) { - m[j] |= ((t&((1<>s; tb = BSH-s; - } - } else { - m[j] |= (t< 1) ) { - t = (double)pow((double)ToReal(a),(double)ToReal(b)); - if ( !t ) - error("pwrreal : Underflow"); /* XXX */ - else - MKReal(t,*c); - } else { - t = pwrreal0(BDY((Real)a),BD(NM((Q)b))[0]); - t = SGN((Q)b)>0?t:1/t; - if ( !t ) - error("pwrreal : Underflow"); /* XXX */ - else - MKReal(t,*c); - } + if ( !b ) + MKReal(1.0,*c); + else if ( !a ) + *c = 0; + else if ( !RATN(b) || !INT(b) || (PL(NM((Q)b)) > 1) ) { + t = (double)pow((double)ToReal(a),(double)ToReal(b)); +#if 0 + if ( !t ) + error("pwrreal : Underflow"); /* XXX */ + else +#endif + MKReal(t,*c); + } else { + t = pwrreal0(BDY((Real)a),BD(NM((Q)b))[0]); + t = SGN((Q)b)>0?t:1/t; +#if 0 + if ( !t ) + error("pwrreal : Underflow"); /* XXX */ + else +#endif + MKReal(t,*c); + } } double pwrreal0(n,e) double n; int e; { - double t; + double t; - if ( e == 1 ) - return n; - else { - t = pwrreal0(n,e / 2); - return e%2 ? t*t*n : t*t; - } + if ( e == 1 ) + return n; + else { + t = pwrreal0(n,e / 2); + return e%2 ? t*t*n : t*t; + } } int cmpreal(a,b) Real a,b; { - double t; + double t; - t = ToReal(a)-ToReal(b); - return t>0.0 ? 1 : t<0.0?-1 : 0; + t = ToReal(a)-ToReal(b); + return t>0.0 ? 1 : t<0.0?-1 : 0; }