gcc/libquadmath/math/remquoq.c

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re PR fortran/46416 (libquadmath: missing functions) PR fortran/46416 * quadmath.h (cbrtq, finiteq, isnanq, signbitq, sqrtq): Remove const from prototype argument. (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): New prototypes. (__quadmath_extern_inline): Define. (cimagq, conjq, crealq): New inlines. * Makefile.am (libquadmath_la_SOURCES): Add math/cimagq.c, math/conjq.c, math/cprojq.c, math/crealq.c, math/fdimq.c, math/fmaxq.c, math/fminq.c, math/ilogbq.c, math/llrintq.c, math/log2q.c, math/lrintq.c, math/nearbyintq.c and math/remquoq.c. * Makefile.in: Regenerated. * quadmath_weak.h (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add. * quadmath-imp.h (__LITTLE_ENDIAN__): Don't define. (ieee854_float128): Use __BYTE_ORDER == __ORDER_BIG_ENDIAN__ tests instead of __BIG_ENDIAN__. * quadmath.map (QUADMATH_1.0): Add cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq and remquoq. * libquadmath.texi (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add. * math/cprojq.c: New file. * math/ilogbq.c: New file. * math/fminq.c: New file. * math/llrintq.c: New file. * math/log2q.c: New file. * math/lrintq.c: New file. * math/crealq.c: New file. * math/nearbyintq.c: New file. * math/fmaxq.c: New file. * math/conjq.c: New file. * math/remquoq.c: New file. * math/cimagq.c: New file. * math/fdimq.c: New file. * math/ldexpq.c: Include errno.h. Set errno to ERANGE if needed. From-SVN: r168854
2011-01-16 17:44:35 +01:00
/* Compute remainder and a congruent to the quotient.
Copyright (C) 1997, 1999, 2002 Free Software Foundation, Inc.
re PR fortran/46416 (libquadmath: missing functions) PR fortran/46416 * quadmath.h (cbrtq, finiteq, isnanq, signbitq, sqrtq): Remove const from prototype argument. (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): New prototypes. (__quadmath_extern_inline): Define. (cimagq, conjq, crealq): New inlines. * Makefile.am (libquadmath_la_SOURCES): Add math/cimagq.c, math/conjq.c, math/cprojq.c, math/crealq.c, math/fdimq.c, math/fmaxq.c, math/fminq.c, math/ilogbq.c, math/llrintq.c, math/log2q.c, math/lrintq.c, math/nearbyintq.c and math/remquoq.c. * Makefile.in: Regenerated. * quadmath_weak.h (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add. * quadmath-imp.h (__LITTLE_ENDIAN__): Don't define. (ieee854_float128): Use __BYTE_ORDER == __ORDER_BIG_ENDIAN__ tests instead of __BIG_ENDIAN__. * quadmath.map (QUADMATH_1.0): Add cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq and remquoq. * libquadmath.texi (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add. * math/cprojq.c: New file. * math/ilogbq.c: New file. * math/fminq.c: New file. * math/llrintq.c: New file. * math/log2q.c: New file. * math/lrintq.c: New file. * math/crealq.c: New file. * math/nearbyintq.c: New file. * math/fmaxq.c: New file. * math/conjq.c: New file. * math/remquoq.c: New file. * math/cimagq.c: New file. * math/fdimq.c: New file. * math/ldexpq.c: Include errno.h. Set errno to ERANGE if needed. From-SVN: r168854
2011-01-16 17:44:35 +01:00
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997 and
Jakub Jelinek <jj@ultra.linux.cz>, 1999.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include "quadmath-imp.h"
static const __float128 zero = 0.0;
__float128
remquoq (__float128 x, __float128 y, int *quo)
{
int64_t hx,hy;
uint64_t sx,lx,ly,qs;
re PR fortran/46416 (libquadmath: missing functions) PR fortran/46416 * quadmath.h (cbrtq, finiteq, isnanq, signbitq, sqrtq): Remove const from prototype argument. (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): New prototypes. (__quadmath_extern_inline): Define. (cimagq, conjq, crealq): New inlines. * Makefile.am (libquadmath_la_SOURCES): Add math/cimagq.c, math/conjq.c, math/cprojq.c, math/crealq.c, math/fdimq.c, math/fmaxq.c, math/fminq.c, math/ilogbq.c, math/llrintq.c, math/log2q.c, math/lrintq.c, math/nearbyintq.c and math/remquoq.c. * Makefile.in: Regenerated. * quadmath_weak.h (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add. * quadmath-imp.h (__LITTLE_ENDIAN__): Don't define. (ieee854_float128): Use __BYTE_ORDER == __ORDER_BIG_ENDIAN__ tests instead of __BIG_ENDIAN__. * quadmath.map (QUADMATH_1.0): Add cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq and remquoq. * libquadmath.texi (cimagq, conjq, cprojq, crealq, fdimq, fmaxq, fminq, ilogbq, llrintq, log2q, lrintq, nearbyintq, remquoq): Add. * math/cprojq.c: New file. * math/ilogbq.c: New file. * math/fminq.c: New file. * math/llrintq.c: New file. * math/log2q.c: New file. * math/lrintq.c: New file. * math/crealq.c: New file. * math/nearbyintq.c: New file. * math/fmaxq.c: New file. * math/conjq.c: New file. * math/remquoq.c: New file. * math/cimagq.c: New file. * math/fdimq.c: New file. * math/ldexpq.c: Include errno.h. Set errno to ERANGE if needed. From-SVN: r168854
2011-01-16 17:44:35 +01:00
int cquo;
GET_FLT128_WORDS64 (hx, lx, x);
GET_FLT128_WORDS64 (hy, ly, y);
sx = hx & 0x8000000000000000ULL;
qs = sx ^ (hy & 0x8000000000000000ULL);
hy &= 0x7fffffffffffffffLL;
hx &= 0x7fffffffffffffffLL;
/* Purge off exception values. */
if ((hy | ly) == 0)
return (x * y) / (x * y); /* y = 0 */
if ((hx >= 0x7fff000000000000LL) /* x not finite */
|| ((hy >= 0x7fff000000000000LL) /* y is NaN */
&& (((hy - 0x7fff000000000000LL) | ly) != 0)))
return (x * y) / (x * y);
if (hy <= 0x7ffbffffffffffffLL)
x = fmodq (x, 8 * y); /* now x < 8y */
if (((hx - hy) | (lx - ly)) == 0)
{
*quo = qs ? -1 : 1;
return zero * x;
}
x = fabsq (x);
y = fabsq (y);
cquo = 0;
if (x >= 4 * y)
{
x -= 4 * y;
cquo += 4;
}
if (x >= 2 * y)
{
x -= 2 * y;
cquo += 2;
}
if (hy < 0x0002000000000000LL)
{
if (x + x > y)
{
x -= y;
++cquo;
if (x + x >= y)
{
x -= y;
++cquo;
}
}
}
else
{
__float128 y_half = 0.5Q * y;
if (x > y_half)
{
x -= y;
++cquo;
if (x >= y_half)
{
x -= y;
++cquo;
}
}
}
*quo = qs ? -cquo : cquo;
if (sx)
x = -x;
return x;
}