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Use the GCC builtin functions for the non-inlined signbit implementations.

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2015-09-18  Wilco Dijkstra  <wdijkstr@arm.com>

        * sysdeps/ieee754/dbl-64/s_signbit.c (__signbit):
        Use __builtin_signbit.
        * sysdeps/ieee754/flt-32/s_signbitf.c (__signbitf):
        Use __builtin_signbitf.
        * sysdeps/ieee754/ldbl-128/s_signbitl.c (__signbitl):
        Use __builtin_signbitl.
        * sysdeps/ieee754/ldbl-128ibm/s_signbitl.c (___signbitl): Likewise.
        * sysdeps/ieee754/ldbl-96/s_signbitl.c (__signbitl): Likewise.
This commit is contained in:
Wilco Dijkstra 2015-09-18 16:39:08 +01:00
parent 8df4e219e4
commit 020167a4ce
6 changed files with 16 additions and 31 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
2015-09-18 Wilco Dijkstra <wdijkstr@arm.com>
* sysdeps/ieee754/dbl-64/s_signbit.c (__signbit):
Use __builtin_signbit.
* sysdeps/ieee754/flt-32/s_signbitf.c (__signbitf):
Use __builtin_signbitf.
* sysdeps/ieee754/ldbl-128/s_signbitl.c (__signbitl):
Use __builtin_signbitl.
* sysdeps/ieee754/ldbl-128ibm/s_signbitl.c (___signbitl): Likewise.
* sysdeps/ieee754/ldbl-96/s_signbitl.c (__signbitl): Likewise.
2015-09-18 Wilco Dijkstra <wdijkstr@arm.com> 2015-09-18 Wilco Dijkstra <wdijkstr@arm.com>
[BZ #15367] [BZ #15367]

7
sysdeps/ieee754/dbl-64/s_signbit.c
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@ -19,13 +19,8 @@
#include <math.h> #include <math.h>
#include <math_private.h>
int int
__signbit (double x) __signbit (double x)
{ {
int32_t hx; return __builtin_signbit (x);
GET_HIGH_WORD (hx, x);
return hx & 0x80000000;
} }

7
sysdeps/ieee754/flt-32/s_signbitf.c
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@ -19,13 +19,8 @@
#include <math.h> #include <math.h>
#include <math_private.h>
int int
__signbitf (float x) __signbitf (float x)
{ {
int32_t hx; return __builtin_signbitf (x);
GET_FLOAT_WORD (hx, x);
return hx & 0x80000000;
} }

7
sysdeps/ieee754/ldbl-128/s_signbitl.c
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@ -19,13 +19,8 @@
#include <math.h> #include <math.h>
#include <math_private.h>
int int
__signbitl (long double x) __signbitl (long double x)
{ {
int64_t e; return __builtin_signbitl (x);
GET_LDOUBLE_MSW64 (e, x);
return e < 0;
} }

8
sysdeps/ieee754/ldbl-128ibm/s_signbitl.c
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@ -18,18 +18,12 @@
<http://www.gnu.org/licenses/>. */ <http://www.gnu.org/licenses/>. */
#include <math.h> #include <math.h>
#include <math_private.h>
#include <math_ldbl_opt.h> #include <math_ldbl_opt.h>
int int
___signbitl (long double x) ___signbitl (long double x)
{ {
int64_t e; return __builtin_signbitl (x);
double xhi;
xhi = ldbl_high (x);
EXTRACT_WORDS64 (e, xhi);
return e < 0;
} }
#if IS_IN (libm) #if IS_IN (libm)
long_double_symbol (libm, ___signbitl, __signbitl); long_double_symbol (libm, ___signbitl, __signbitl);

7
sysdeps/ieee754/ldbl-96/s_signbitl.c
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@ -19,13 +19,8 @@
#include <math.h> #include <math.h>
#include <math_private.h>
int int
__signbitl (long double x) __signbitl (long double x)
{ {
int32_t e; return __builtin_signbitl (x);
GET_LDOUBLE_EXP (e, x);
return e & 0x8000;
} }