/*
 * 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/builtin/math.c,v 1.6 2003/12/11 00:19:24 noro Exp $ 
*/
#include "ca.h"
#include <math.h>
#include "parse.h"

void Pdsqrt(),Pdsin(),Pdcos(),Pdtan(),Pdasin(),Pdacos(),Pdatan(),Pdlog(),Pdexp();
void Pabs(),Pdfloor(),Pdceil(),Pdrint();

struct ftab math_tab[] = {
	{"dsqrt",Pdsqrt,1},
	{"dabs",Pabs,1},
	{"dsin",Pdsin,1},
	{"dcos",Pdcos,1},
	{"dtan",Pdtan,1},
	{"dlog",Pdlog,1},
	{"dexp",Pdexp,1},
	{"dasin",Pdasin,1},
	{"dacos",Pdacos,1},
	{"datan",Pdatan,1},
	{"floor",Pdfloor,1},
	{"dfloor",Pdfloor,1},
	{"ceil",Pdceil,1},
	{"dceil",Pdceil,1},
	{"rint",Pdrint,1},
	{"drint",Pdrint,1},
	{0,0,0},
};

void Pabs(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = fabs(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdsqrt(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = sqrt(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdsin(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = sin(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdcos(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = cos(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdtan(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = tan(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdasin(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = asin(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdacos(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = acos(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdatan(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = atan(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdlog(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = log(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdexp(arg,rp)
NODE arg;
Real *rp;
{
	double s;

	s = exp(ToReal(ARG0(arg)));
	MKReal(s,*rp);
}

void Pdfloor(arg,rp)
NODE arg;
Q *rp;
{
	L a;
	unsigned int au,al;
	int sgn;
	Q q;
	double d;

	if ( !ARG0(arg) ) {
		*rp = 0;
		return;
	}
	d = floor(ToReal(ARG0(arg)));
	if ( d < -9.223372036854775808e18 || d >= 9.223372036854775808e18 )
		error("dfloor : OverFlow");
	if ( !d ) {
		*rp = 0;
		return;
	}
	a = (L)d;
	if ( a < 0 ) {
		sgn = -1;
		a = -a;
	} else
		sgn = 1;
#if defined(i386) || defined(__alpha) || defined(VISUAL)
	au = ((unsigned int *)&a)[1];
	al = ((unsigned int *)&a)[0];
#else
	al = ((unsigned int *)&a)[1];
	au = ((unsigned int *)&a)[0];
#endif
	if ( au ) {
		NEWQ(q); SGN(q) = sgn; NM(q)=NALLOC(2); DN(q)=0;
		PL(NM(q))=2; BD(NM(q))[0]=al; BD(NM(q))[1] = au;
	} else {
		UTOQ(al,q); SGN(q) = sgn;
	}
	*rp = q;
}

void Pdceil(arg,rp)
NODE arg;
Q *rp;
{
	L a;
	unsigned int au,al;
	int sgn;
	Q q;
	double d;

	if ( !ARG0(arg) ) {
		*rp = 0;
		return;
	}
	d = ceil(ToReal(ARG0(arg)));
	if ( d < -9.223372036854775808e18 || d >= 9.223372036854775808e18 )
		error("dceil : OverFlow");
	if ( !d ) {
		*rp = 0;
		return;
	}
	a = (L)d;
	if ( a < 0 ) {
		sgn = -1;
		a = -a;
	} else
		sgn = 1;
#if defined(i386) || defined(__alpha) || defined(VISUAL)
	au = ((unsigned int *)&a)[1];
	al = ((unsigned int *)&a)[0];
#else
	al = ((unsigned int *)&a)[1];
	au = ((unsigned int *)&a)[0];
#endif
	if ( au ) {
		NEWQ(q); SGN(q) = sgn; NM(q)=NALLOC(2); DN(q)=0;
		PL(NM(q))=2; BD(NM(q))[0]=al; BD(NM(q))[1] = au;
	} else {
		UTOQ(al,q); SGN(q) = sgn;
	}
	*rp = q;
}

void Pdrint(arg,rp)
NODE arg;
Q *rp;
{
	L a;
	unsigned int au,al;
	int sgn;
	Q q;
	double d;

	if ( !ARG0(arg) ) {
		*rp = 0;
		return;
	}
#if defined(VISUAL)
	d = ToReal(ARG0(arg));
	if ( d > 0 )
		d = floor(d+0.5);
	else
		d = ceil(d-0.5);
#else
	d = rint(ToReal(ARG0(arg)));
#endif
	if ( d < -9.223372036854775808e18 || d >= 9.223372036854775808e18 )
		error("drint : OverFlow");
	a = (L)d;
	if ( a < 0 ) {
		sgn = -1;
		a = -a;
	} else
		sgn = 1;
#if defined(i386) || defined(__alpha) || defined(VISUAL)
	au = ((unsigned int *)&a)[1];
	al = ((unsigned int *)&a)[0];
#else
	al = ((unsigned int *)&a)[1];
	au = ((unsigned int *)&a)[0];
#endif
	if ( au ) {
		NEWQ(q); SGN(q) = sgn; NM(q)=NALLOC(2); DN(q)=0;
		PL(NM(q))=2; BD(NM(q))[0]=al; BD(NM(q))[1] = au;
	} else if ( al ) {
		UTOQ(al,q); SGN(q) = sgn;
	} else
		q = 0;
	*rp = q;
}