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| author | Joseph Myers <joseph@codesourcery.com> | 2015-09-17 16:47:14 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-09-17 16:47:14 +0000 |
| commit | b8682397ab2db1aed7f25d0a0c7c81134a97c8c7 (patch) | |
| tree | 76b6a9cbc7456f7ee53fe40cc86e0c7fe5e87f7a /sysdeps/ieee754/ldbl-128 | |
| parent | 46f74e1deee549b41160d353ce0c8f7db555d36c (diff) | |
| download | glibc-b8682397ab2db1aed7f25d0a0c7c81134a97c8c7.tar.gz | |
Reduce number of constants in __finite* (bug 15384).
Bug 15384 notes that in __finite, two different constants are used
that could be the same constant (the result only depends on the
exponent of the floating-point representation), and that using the
same constant is better for architectures where constants need loading
from a constant pool. This patch implements that change.
Tested for x86_64, mips64 and powerpc.
[BZ #15384]
* sysdeps/ieee754/dbl-64/s_finite.c (FINITE): Use same constant as
bit-mask as in subtraction.
* sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c (__finite):
Likewise.
* sysdeps/ieee754/flt-32/s_finitef.c (FINITEF): Likewise.
* sysdeps/ieee754/ldbl-128/s_finitel.c (__finitel): Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_finitel.c (__finitel): Likewise.
Diffstat (limited to 'sysdeps/ieee754/ldbl-128')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/s_finitel.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_finitel.c b/sysdeps/ieee754/ldbl-128/s_finitel.c index f862a448ed..ea8a9ba379 100644 --- a/sysdeps/ieee754/ldbl-128/s_finitel.c +++ b/sysdeps/ieee754/ldbl-128/s_finitel.c @@ -29,7 +29,7 @@ int __finitel(long double x) { int64_t hx; GET_LDOUBLE_MSW64(hx,x); - return (int)((u_int64_t)((hx&0x7fffffffffffffffLL) + return (int)((u_int64_t)((hx&0x7fff000000000000LL) -0x7fff000000000000LL)>>63); } hidden_def (__finitel) |