mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 18:23:41 +08:00
Implement accurate fma.
This commit is contained in:
Jakub Jelinek
Ulrich Drepper
parent
f90681487d
commit
5e908464b9
32
ChangeLog
32
ChangeLog
@ -1,3 +1,35 @@
|
||||
2010-10-13 Jakub Jelinek <jakub@redhat.com>
|
||||
|
||||
[BZ #3268]
|
||||
* math/libm-test.inc (fma_test): Some more fmaf and fma tests.
|
||||
* sysdeps/i386/i686/multiarch/s_fma.c: Include ldbl-96 version
|
||||
instead of dbl-64.
|
||||
* sysdeps/i386/fpu/bits/mathinline.h (fma, fmaf, fmal): Remove
|
||||
inlines.
|
||||
* sysdeps/ieee754/ldbl-96/s_fma.c: New file.
|
||||
* sysdeps/ieee754/dbl-64/s_fma.c (__fma): Fix exponent adjustment
|
||||
if one of x and y is very large and the other is subnormal.
|
||||
* sysdeps/s390/fpu/s_fmaf.c: New file.
|
||||
* sysdeps/s390/fpu/s_fma.c: New file.
|
||||
* sysdeps/powerpc/fpu/s_fmaf.S: New file.
|
||||
* sysdeps/powerpc/fpu/s_fma.S: New file.
|
||||
* sysdeps/powerpc/powerpc32/fpu/s_fma.S: New file.
|
||||
* sysdeps/powerpc/powerpc64/fpu/s_fma.S: New file.
|
||||
* sysdeps/unix/sysv/linux/s390/fpu/s_fma.c: New file.
|
||||
|
||||
2010-10-12 Jakub Jelinek <jakub@redhat.com>
|
||||
|
||||
[BZ #3268]
|
||||
* math/libm-test.inc (fma_test): Add some more fmaf tests, add
|
||||
fma tests.
|
||||
* sysdeps/ieee754/dbl-64/s_fmaf.c (__fmaf): Fix Inf/Nan check.
|
||||
* sysdeps/ieee754/dbl-64/s_fma.c: New file.
|
||||
* sysdeps/i386/i686/multiarch/s_fma.c: Include
|
||||
sysdeps/ieee754/dbl-64/s_fma.c instead of math/s_fma.c.
|
||||
* sysdeps/x86_64/multiarch/s_fma.c: Likewise.
|
||||
* sysdeps/ieee754/ldbl-opt/s_fma.c: Likewise.
|
||||
* sysdeps/ieee754/ldbl-128/s_fma.c: New file.
|
||||
|
||||
2010-10-12 Ulrich Drepper <drepper@redhat.com>
|
||||
|
||||
[BZ #12078]
|
||||
|
||||
@ -2789,9 +2789,25 @@ fma_test (void)
|
||||
TEST_fff_f (fma, minus_infty, minus_infty, minus_infty, nan_value, INVALID_EXCEPTION);
|
||||
|
||||
TEST_fff_f (fma, 1.25L, 0.75L, 0.0625L, 1.0L);
|
||||
#ifdef TEST_FLOAT
|
||||
#if defined (TEST_FLOAT) && FLT_MANT_DIG == 24
|
||||
TEST_fff_f (fma, 0x1.7ff8p+13, 0x1.000002p+0, 0x1.ffffp-24, 0x1.7ff802p+13);
|
||||
TEST_fff_f (fma, 0x1.fffp+0, 0x1.00001p+0, -0x1.fffp+0, 0x1.fffp-20);
|
||||
TEST_fff_f (fma, 0x1.9abcdep+127, 0x0.9abcdep-126, -0x1.f08948p+0, 0x1.bb421p-25);
|
||||
TEST_fff_f (fma, 0x1.9abcdep+100, 0x0.9abcdep-126, -0x1.f08948p-27, 0x1.bb421p-52);
|
||||
TEST_fff_f (fma, 0x1.fffffep+127, 0x1.001p+0, -0x1.fffffep+127, 0x1.fffffep+115);
|
||||
TEST_fff_f (fma, -0x1.fffffep+127, 0x1.fffffep+0, 0x1.fffffep+127, -0x1.fffffap+127);
|
||||
TEST_fff_f (fma, 0x1.fffffep+127, 2.0, -0x1.fffffep+127, 0x1.fffffep+127);
|
||||
#endif
|
||||
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
|
||||
TEST_fff_f (fma, 0x1.7fp+13, 0x1.0000000000001p+0, 0x1.ffep-48, 0x1.7f00000000001p+13);
|
||||
TEST_fff_f (fma, 0x1.fffp+0, 0x1.0000000000001p+0, -0x1.fffp+0, 0x1.fffp-52);
|
||||
TEST_fff_f (fma, 0x1.0000002p+0, 0x1.ffffffcp-1, 0x1p-300, 1.0);
|
||||
TEST_fff_f (fma, 0x1.0000002p+0, 0x1.ffffffcp-1, -0x1p-300, 0x1.fffffffffffffp-1);
|
||||
TEST_fff_f (fma, 0x1.deadbeef2feedp+1023, 0x0.deadbeef2feedp-1022, -0x1.a05f8c01a4bfbp+1, 0x1.0989687bc9da4p-53);
|
||||
TEST_fff_f (fma, 0x1.deadbeef2feedp+900, 0x0.deadbeef2feedp-1022, -0x1.a05f8c01a4bfbp-122, 0x1.0989687bc9da4p-176);
|
||||
TEST_fff_f (fma, 0x1.fffffffffffffp+1023, 0x1.001p+0, -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+1011);
|
||||
TEST_fff_f (fma, -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+0, 0x1.fffffffffffffp+1023, -0x1.ffffffffffffdp+1023);
|
||||
TEST_fff_f (fma, 0x1.fffffffffffffp+1023, 2.0, -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+1023);
|
||||
#endif
|
||||
|
||||
END (fma);
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
/* Inline math functions for i387.
|
||||
Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2003,2004,2006,2007,2009
|
||||
Free Software Foundation, Inc.
|
||||
Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2003,2004,2006,2007,2009,
|
||||
2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by John C. Bowman <bowman@math.ualberta.ca>, 1995.
|
||||
|
||||
@ -657,8 +657,6 @@ __NTH (ldexpl (long double __x, int __y))
|
||||
__ldexp_code;
|
||||
}
|
||||
|
||||
__inline_mathcodeNP3 (fma, __x, __y, __z, return (__x * __y) + __z)
|
||||
|
||||
__inline_mathopNP (rint, "frndint")
|
||||
# endif /* __FAST_MATH__ */
|
||||
|
||||
|
||||
@ -33,4 +33,4 @@ weak_alias (__fma, fma)
|
||||
# define __fma __fma_ia32
|
||||
#endif
|
||||
|
||||
#include <math/s_fma.c>
|
||||
#include <sysdeps/ieee754/ldbl-96/s_fma.c>
|
||||
|
||||
146
sysdeps/ieee754/dbl-64/s_fma.c
Normal file
146
sysdeps/ieee754/dbl-64/s_fma.c
Normal file
@ -0,0 +1,146 @@
|
||||
/* Compute x * y + z as ternary operation.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
|
||||
|
||||
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 <float.h>
|
||||
#include <math.h>
|
||||
#include <fenv.h>
|
||||
#include <ieee754.h>
|
||||
|
||||
/* This implementation uses rounding to odd to avoid problems with
|
||||
double rounding. See a paper by Boldo and Melquiond:
|
||||
http://www.lri.fr/~melquion/doc/08-tc.pdf */
|
||||
|
||||
double
|
||||
__fma (double x, double y, double z)
|
||||
{
|
||||
union ieee754_double u, v, w;
|
||||
int adjust = 0;
|
||||
u.d = x;
|
||||
v.d = y;
|
||||
w.d = z;
|
||||
if (__builtin_expect (u.ieee.exponent + v.ieee.exponent
|
||||
>= 0x7ff + IEEE754_DOUBLE_BIAS - DBL_MANT_DIG, 0)
|
||||
|| __builtin_expect (u.ieee.exponent >= 0x7ff - DBL_MANT_DIG, 0)
|
||||
|| __builtin_expect (v.ieee.exponent >= 0x7ff - DBL_MANT_DIG, 0)
|
||||
|| __builtin_expect (w.ieee.exponent >= 0x7ff - DBL_MANT_DIG, 0))
|
||||
{
|
||||
/* If x or y or z is Inf/NaN or if fma will certainly overflow,
|
||||
compute as x * y + z. */
|
||||
if (u.ieee.exponent == 0x7ff
|
||||
|| v.ieee.exponent == 0x7ff
|
||||
|| w.ieee.exponent == 0x7ff
|
||||
|| u.ieee.exponent + v.ieee.exponent
|
||||
> 0x7ff + IEEE754_DOUBLE_BIAS)
|
||||
return x * y + z;
|
||||
if (u.ieee.exponent + v.ieee.exponent
|
||||
>= 0x7ff + IEEE754_DOUBLE_BIAS - DBL_MANT_DIG)
|
||||
{
|
||||
/* Compute 1p-53 times smaller result and multiply
|
||||
at the end. */
|
||||
if (u.ieee.exponent > v.ieee.exponent)
|
||||
u.ieee.exponent -= DBL_MANT_DIG;
|
||||
else
|
||||
v.ieee.exponent -= DBL_MANT_DIG;
|
||||
/* If x + y exponent is very large and z exponent is very small,
|
||||
it doesn't matter if we don't adjust it. */
|
||||
if (w.ieee.exponent > DBL_MANT_DIG)
|
||||
w.ieee.exponent -= DBL_MANT_DIG;
|
||||
adjust = 1;
|
||||
}
|
||||
else if (w.ieee.exponent >= 0x7ff - DBL_MANT_DIG)
|
||||
{
|
||||
/* Similarly.
|
||||
If z exponent is very large and x and y exponents are
|
||||
very small, it doesn't matter if we don't adjust it. */
|
||||
if (u.ieee.exponent > v.ieee.exponent)
|
||||
{
|
||||
if (u.ieee.exponent > DBL_MANT_DIG)
|
||||
u.ieee.exponent -= DBL_MANT_DIG;
|
||||
}
|
||||
else if (v.ieee.exponent > DBL_MANT_DIG)
|
||||
v.ieee.exponent -= DBL_MANT_DIG;
|
||||
w.ieee.exponent -= DBL_MANT_DIG;
|
||||
adjust = 1;
|
||||
}
|
||||
else if (u.ieee.exponent >= 0x7ff - DBL_MANT_DIG)
|
||||
{
|
||||
u.ieee.exponent -= DBL_MANT_DIG;
|
||||
if (v.ieee.exponent)
|
||||
v.ieee.exponent += DBL_MANT_DIG;
|
||||
else
|
||||
v.d *= 0x1p53;
|
||||
}
|
||||
else
|
||||
{
|
||||
v.ieee.exponent -= DBL_MANT_DIG;
|
||||
if (u.ieee.exponent)
|
||||
u.ieee.exponent += DBL_MANT_DIG;
|
||||
else
|
||||
u.d *= 0x1p53;
|
||||
}
|
||||
x = u.d;
|
||||
y = v.d;
|
||||
z = w.d;
|
||||
}
|
||||
/* Multiplication m1 + m2 = x * y using Dekker's algorithm. */
|
||||
#define C ((1 << (DBL_MANT_DIG + 1) / 2) + 1)
|
||||
double x1 = x * C;
|
||||
double y1 = y * C;
|
||||
double m1 = x * y;
|
||||
x1 = (x - x1) + x1;
|
||||
y1 = (y - y1) + y1;
|
||||
double x2 = x - x1;
|
||||
double y2 = y - y1;
|
||||
double m2 = (((x1 * y1 - m1) + x1 * y2) + x2 * y1) + x2 * y2;
|
||||
|
||||
/* Addition a1 + a2 = z + m1 using Knuth's algorithm. */
|
||||
double a1 = z + m1;
|
||||
double t1 = a1 - z;
|
||||
double t2 = a1 - t1;
|
||||
t1 = m1 - t1;
|
||||
t2 = z - t2;
|
||||
double a2 = t1 + t2;
|
||||
|
||||
fenv_t env;
|
||||
feholdexcept (&env);
|
||||
fesetround (FE_TOWARDZERO);
|
||||
/* Perform m2 + a2 addition with round to odd. */
|
||||
u.d = a2 + m2;
|
||||
if ((u.ieee.mantissa1 & 1) == 0 && u.ieee.exponent != 0x7ff)
|
||||
u.ieee.mantissa1 |= fetestexcept (FE_INEXACT) != 0;
|
||||
feupdateenv (&env);
|
||||
|
||||
/* Add that to a1. */
|
||||
a1 = a1 + u.d;
|
||||
|
||||
/* And adjust exponent if needed. */
|
||||
if (__builtin_expect (adjust, 0))
|
||||
a1 *= 0x1p53;
|
||||
|
||||
return a1;
|
||||
}
|
||||
#ifndef __fma
|
||||
weak_alias (__fma, fma)
|
||||
#endif
|
||||
|
||||
#ifdef NO_LONG_DOUBLE
|
||||
strong_alias (__fma, __fmal)
|
||||
weak_alias (__fmal, fmal)
|
||||
#endif
|
||||
@ -39,7 +39,7 @@ __fmaf (float x, float y, float z)
|
||||
fesetround (FE_TOWARDZERO);
|
||||
/* Perform addition with round to odd. */
|
||||
u.d = temp + (double) z;
|
||||
if ((u.ieee.mantissa1 & 1) == 0 && u.ieee.exponent != 0xff)
|
||||
if ((u.ieee.mantissa1 & 1) == 0 && u.ieee.exponent != 0x7ff)
|
||||
u.ieee.mantissa1 |= fetestexcept (FE_INEXACT) != 0;
|
||||
feupdateenv (&env);
|
||||
/* And finally truncation with round to nearest. */
|
||||
|
||||
50
sysdeps/ieee754/ldbl-128/s_fma.c
Normal file
50
sysdeps/ieee754/ldbl-128/s_fma.c
Normal file
@ -0,0 +1,50 @@
|
||||
/* Compute x * y + z as ternary operation.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
|
||||
|
||||
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 <math.h>
|
||||
#include <fenv.h>
|
||||
#include <ieee754.h>
|
||||
|
||||
/* This implementation relies on long double being more than twice as
|
||||
precise as double and uses rounding to odd in order to avoid problems
|
||||
with double rounding.
|
||||
See a paper by Boldo and Melquiond:
|
||||
http://www.lri.fr/~melquion/doc/08-tc.pdf */
|
||||
|
||||
double
|
||||
__fma (double x, double y, double z)
|
||||
{
|
||||
fenv_t env;
|
||||
/* Multiplication is always exact. */
|
||||
long double temp = (long double) x * (long double) y;
|
||||
union ieee854_long_double u;
|
||||
feholdexcept (&env);
|
||||
fesetround (FE_TOWARDZERO);
|
||||
/* Perform addition with round to odd. */
|
||||
u.d = temp + (long double) z;
|
||||
if ((u.ieee.mantissa3 & 1) == 0 && u.ieee.exponent != 0x7fff)
|
||||
u.ieee.mantissa3 |= fetestexcept (FE_INEXACT) != 0;
|
||||
feupdateenv (&env);
|
||||
/* And finally truncation with round to nearest. */
|
||||
return (double) u.d;
|
||||
}
|
||||
#ifndef __fma
|
||||
weak_alias (__fma, fma)
|
||||
#endif
|
||||
70
sysdeps/ieee754/ldbl-96/s_fma.c
Normal file
70
sysdeps/ieee754/ldbl-96/s_fma.c
Normal file
@ -0,0 +1,70 @@
|
||||
/* Compute x * y + z as ternary operation.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
|
||||
|
||||
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 <float.h>
|
||||
#include <math.h>
|
||||
#include <fenv.h>
|
||||
#include <ieee754.h>
|
||||
|
||||
/* This implementation uses rounding to odd to avoid problems with
|
||||
double rounding. See a paper by Boldo and Melquiond:
|
||||
http://www.lri.fr/~melquion/doc/08-tc.pdf */
|
||||
|
||||
double
|
||||
__fma (double x, double y, double z)
|
||||
{
|
||||
/* Multiplication m1 + m2 = x * y using Dekker's algorithm. */
|
||||
#define C ((1ULL << (LDBL_MANT_DIG + 1) / 2) + 1)
|
||||
long double x1 = x * C;
|
||||
long double y1 = y * C;
|
||||
long double m1 = x * y;
|
||||
x1 = (x - x1) + x1;
|
||||
y1 = (y - y1) + y1;
|
||||
long double x2 = x - x1;
|
||||
long double y2 = y - y1;
|
||||
long double m2 = (((x1 * y1 - m1) + x1 * y2) + x2 * y1) + x2 * y2;
|
||||
|
||||
/* Addition a1 + a2 = z + m1 using Knuth's algorithm. */
|
||||
long double a1 = z + m1;
|
||||
long double t1 = a1 - z;
|
||||
long double t2 = a1 - t1;
|
||||
t1 = m1 - t1;
|
||||
t2 = z - t2;
|
||||
long double a2 = t1 + t2;
|
||||
|
||||
fenv_t env;
|
||||
feholdexcept (&env);
|
||||
fesetround (FE_TOWARDZERO);
|
||||
/* Perform m2 + a2 addition with round to odd. */
|
||||
a2 = a2 + m2;
|
||||
|
||||
/* Add that to a1 again using rounding to odd. */
|
||||
union ieee854_long_double u;
|
||||
u.d = a1 + a2;
|
||||
if ((u.ieee.mantissa1 & 1) == 0 && u.ieee.exponent != 0x7fff)
|
||||
u.ieee.mantissa1 |= fetestexcept (FE_INEXACT) != 0;
|
||||
feupdateenv (&env);
|
||||
|
||||
/* Add finally round to double precision. */
|
||||
return u.d;
|
||||
}
|
||||
#ifndef __fma
|
||||
weak_alias (__fma, fma)
|
||||
#endif
|
||||
@ -1,5 +1,5 @@
|
||||
#include <math_ldbl_opt.h>
|
||||
#include <math/s_fma.c>
|
||||
#include <sysdeps/ieee754/dbl-64/s_fma.c>
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
|
||||
compat_symbol (libm, __fma, fmal, GLIBC_2_1);
|
||||
#endif
|
||||
|
||||
33
sysdeps/powerpc/fpu/s_fma.S
Normal file
33
sysdeps/powerpc/fpu/s_fma.S
Normal file
@ -0,0 +1,33 @@
|
||||
/* Compute x * y + z as ternary operation. PowerPC version.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
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 <sysdep.h>
|
||||
|
||||
ENTRY(__fma)
|
||||
/* double [f1] fma (double [f1] x, double [f2] y, double [f3] z); */
|
||||
fmadd fp1,fp1,fp2,fp3
|
||||
blr
|
||||
END(__fma)
|
||||
|
||||
weak_alias (__fma,fma)
|
||||
|
||||
#ifdef NO_LONG_DOUBLE
|
||||
weak_alias (__fma,__fmal)
|
||||
weak_alias (__fma,fmal)
|
||||
#endif
|
||||
28
sysdeps/powerpc/fpu/s_fmaf.S
Normal file
28
sysdeps/powerpc/fpu/s_fmaf.S
Normal file
@ -0,0 +1,28 @@
|
||||
/* Compute x * y + z as ternary operation. PowerPC version.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
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 <sysdep.h>
|
||||
|
||||
ENTRY(__fmaf)
|
||||
/* float [f1] fmaf (float [f1] x, float [f2] y, float [f3] z); */
|
||||
fmadds fp1,fp1,fp2,fp3
|
||||
blr
|
||||
END(__fmaf)
|
||||
|
||||
weak_alias (__fmaf,fmaf)
|
||||
5
sysdeps/powerpc/powerpc32/fpu/s_fma.S
Normal file
5
sysdeps/powerpc/powerpc32/fpu/s_fma.S
Normal file
@ -0,0 +1,5 @@
|
||||
#include <math_ldbl_opt.h>
|
||||
#include <sysdeps/powerpc/fpu/s_fma.S>
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
|
||||
compat_symbol (libm, __fma, fmal, GLIBC_2_1)
|
||||
#endif
|
||||
5
sysdeps/powerpc/powerpc64/fpu/s_fma.S
Normal file
5
sysdeps/powerpc/powerpc64/fpu/s_fma.S
Normal file
@ -0,0 +1,5 @@
|
||||
#include <math_ldbl_opt.h>
|
||||
#include <sysdeps/powerpc/fpu/s_fma.S>
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
|
||||
compat_symbol (libm, __fma, fmal, GLIBC_2_1)
|
||||
#endif
|
||||
37
sysdeps/s390/fpu/s_fma.c
Normal file
37
sysdeps/s390/fpu/s_fma.c
Normal file
@ -0,0 +1,37 @@
|
||||
/* Compute x * y + z as ternary operation. S/390 version.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
|
||||
|
||||
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 <math.h>
|
||||
|
||||
double
|
||||
__fma (double x, double y, double z)
|
||||
{
|
||||
double r;
|
||||
asm ("madbr %0,%1,%2" : "=f" (r) : "%f" (x), "fR" (y), "0" (z));
|
||||
return r;
|
||||
}
|
||||
#ifndef __fma
|
||||
weak_alias (__fma, fma)
|
||||
#endif
|
||||
|
||||
#ifdef NO_LONG_DOUBLE
|
||||
strong_alias (__fma, __fmal)
|
||||
weak_alias (__fmal, fmal)
|
||||
#endif
|
||||
32
sysdeps/s390/fpu/s_fmaf.c
Normal file
32
sysdeps/s390/fpu/s_fmaf.c
Normal file
@ -0,0 +1,32 @@
|
||||
/* Compute x * y + z as ternary operation. S/390 version.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
|
||||
|
||||
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 <math.h>
|
||||
|
||||
float
|
||||
__fmaf (float x, float y, float z)
|
||||
{
|
||||
float r;
|
||||
asm ("maebr %0,%1,%2" : "=f" (r) : "%f" (x), "fR" (y), "0" (z));
|
||||
return r;
|
||||
}
|
||||
#ifndef __fmaf
|
||||
weak_alias (__fmaf, fmaf)
|
||||
#endif
|
||||
5
sysdeps/unix/sysv/linux/s390/fpu/s_fma.c
Normal file
5
sysdeps/unix/sysv/linux/s390/fpu/s_fma.c
Normal file
@ -0,0 +1,5 @@
|
||||
#include <math_ldbl_opt.h>
|
||||
#include <sysdeps/s390/fpu/s_fma.c>
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
|
||||
compat_symbol (libm, __fma, fmal, GLIBC_2_1);
|
||||
#endif
|
||||
@ -1,5 +1,5 @@
|
||||
/* FMA version of fma.
|
||||
Copyright (C) 2009 Free Software Foundation, Inc.
|
||||
Copyright (C) 2009, 2010 Free Software Foundation, Inc.
|
||||
Contributed by Intel Corporation.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
@ -40,4 +40,4 @@ weak_alias (__fma, fma)
|
||||
# define __fma __fma_sse2
|
||||
#endif
|
||||
|
||||
#include <math/s_fma.c>
|
||||
#include <sysdeps/ieee754/dbl-64/s_fma.c>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user