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x86_64: Use builtin sqrt{f,l} 

Checked on x86_64-linux-gnu.
This commit is contained in:
Adhemerval Zanella 2020-06-04 20:46:34 +00:00
parent 169ea8f928
commit d19d25dd06
4 changed files with 31 additions and 65 deletions
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32
sysdeps/x86_64/fpu/e_sqrt.c
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@ -1,32 +0,0 @@
/* Square root of floating point number.
Copyright (C) 2002-2020 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, see
<https://www.gnu.org/licenses/>. */
#include <math_private.h>
#include <libm-alias-finite.h>
#undef __ieee754_sqrt
double
__ieee754_sqrt (double x)
{
double res;
asm ("sqrtsd %1, %0" : "=x" (res) : "xm" (x));
return res;
}
libm_alias_finite (__ieee754_sqrt, __sqrt)

32
sysdeps/x86_64/fpu/e_sqrtf.c
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@ -1,32 +0,0 @@
/* Square root of floating point number.
Copyright (C) 2002-2020 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, see
<https://www.gnu.org/licenses/>. */
#include <math_private.h>
#include <libm-alias-finite.h>
#undef __ieee754_sqrtf
float
__ieee754_sqrtf (float x)
{
float res;
asm ("sqrtss %1, %0" : "=x" (res) : "xm" (x));
return res;
}
libm_alias_finite (__ieee754_sqrtf, __sqrtf)

28
sysdeps/x86_64/fpu/e_sqrtl.c
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@ -1 +1,27 @@
#include "sysdeps/i386/fpu/e_sqrtl.c"
/* Square root function. x86_64 long double version.
Copyright (C) 2020 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, see
<https://www.gnu.org/licenses/>. */
#include <math.h>
#include <libm-alias-finite.h>
long double
__ieee754_sqrtl (long double x)
{
return __builtin_sqrtl (x);
}
libm_alias_finite (__ieee754_sqrtl, __sqrtl)

4
sysdeps/x86_64/fpu/math-use-builtins-sqrt.h Normal file
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@ -0,0 +1,4 @@
#define USE_SQRT_BUILTIN 1
#define USE_SQRTF_BUILTIN 1
#define USE_SQRTL_BUILTIN 0
#define USE_SQRTF128_BUILTIN 0