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gcc/libquadmath/math/lrintq.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
/* Round argument to nearest integral value according to current rounding
direction.
Revert libquadmath and libssp copyright patches. From-SVN: r195820
2013-02-06 23:03:54 +01:00
Copyright (C) 1997, 1999, 2004, 2006 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 two112[2] =
{
5.19229685853482762853049632922009600E+33Q, /* 0x406F000000000000, 0 */
-5.19229685853482762853049632922009600E+33Q /* 0xC06F000000000000, 0 */
};
long int
lrintq (__float128 x)
{
int32_t j0;
uint64_t i0,i1;
volatile __float128 w;
__float128 t;
long int result;
int sx;
GET_FLT128_WORDS64 (i0, i1, x);
j0 = ((i0 >> 48) & 0x7fff) - 0x3fff;
sx = i0 >> 63;
i0 &= 0x0000ffffffffffffLL;
i0 |= 0x0001000000000000LL;
if (j0 < 48)
{
w = two112[sx] + x;
t = w - two112[sx];
GET_FLT128_WORDS64 (i0, i1, t);
j0 = ((i0 >> 48) & 0x7fff) - 0x3fff;
i0 &= 0x0000ffffffffffffLL;
i0 |= 0x0001000000000000LL;
result = (j0 < 0 ? 0 : i0 >> (48 - j0));
}
else if (j0 < (int32_t) (8 * sizeof (long int)) - 1)
{
if (j0 >= 112)
result = ((long int) i0 << (j0 - 48)) | (i1 << (j0 - 112));
else
{
w = two112[sx] + x;
t = w - two112[sx];
GET_FLT128_WORDS64 (i0, i1, t);
j0 = ((i0 >> 48) & 0x7fff) - 0x3fff;
i0 &= 0x0000ffffffffffffLL;
i0 |= 0x0001000000000000LL;
if (j0 == 48)
result = (long int) i0;
else
result = ((long int) i0 << (j0 - 48)) | (i1 >> (112 - j0));
}
}
else
{
/* The number is too large. It is left implementation defined
what happens. */
return (long int) x;
}
return sx ? -result : result;
}