diff options
| author | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2012-03-03 18:18:04 +0000 |
|---|---|---|
| committer | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2012-03-03 18:18:04 +0000 |
| commit | c0102611b1f1bd1ce2a2952e9b74ff33fa02717e (patch) | |
| tree | 31177266a6797f3c30d0493619d0f06f3f59afe1 /libc/sysdeps/ieee754/flt-32/s_scalblnf.c | |
| parent | 33f3f8954d202664c7c7a224d13ba5a0c14a0e01 (diff) | |
Merge changes between r17194 and r17384 from /fsf/trunk.
git-svn-id: svn://svn.eglibc.org/trunk@17385 7b3dc134-2b1b-0410-93df-9e9f96275f8d
Diffstat (limited to 'libc/sysdeps/ieee754/flt-32/s_scalblnf.c')
| -rw-r--r-- | libc/sysdeps/ieee754/flt-32/s_scalblnf.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libc/sysdeps/ieee754/flt-32/s_scalblnf.c b/libc/sysdeps/ieee754/flt-32/s_scalblnf.c index 5256c3259..2a2d7ab65 100644 --- a/libc/sysdeps/ieee754/flt-32/s_scalblnf.c +++ b/libc/sysdeps/ieee754/flt-32/s_scalblnf.c @@ -35,11 +35,13 @@ __scalblnf (float x, long int n) k = ((ix&0x7f800000)>>23) - 25; } if (__builtin_expect(k==0xff, 0)) return x+x; /* NaN or Inf */ - k = k+n; - if (__builtin_expect(n> 50000 || k > 0xfe, 0)) - return huge*copysignf(huge,x); /* overflow */ if (__builtin_expect(n< -50000, 0)) return tiny*copysignf(tiny,x); /*underflow*/ + if (__builtin_expect(n> 50000 || k+n > 0xfe, 0)) + return huge*copysignf(huge,x); /* overflow */ + /* Now k and n are bounded we know that k = k+n does not + overflow. */ + k = k+n; if (__builtin_expect(k > 0, 1)) /* normal result */ {SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); return x;} if (k <= -25) |