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| author | Andreas Jaeger <aj@suse.de> | 2012-03-07 08:55:31 +0100 |
|---|---|---|
| committer | Andreas Jaeger <aj@suse.de> | 2012-03-07 08:55:31 +0100 |
| commit | 580716898d5e80784f1993a0129d1b821bc6e3bf (patch) | |
| tree | c346faaab5b1f4005f3c0dd8f16ba701a30ad541 /sysdeps/ieee754/ldbl-96/s_scalblnl.c | |
| parent | 625d134f42d65ebc0349c03a0d9592400e86d084 (diff) | |
| parent | 3bd2c723160f04b1c151daffb8f6596dbd633f5e (diff) | |
| download | glibc-580716898d5e80784f1993a0129d1b821bc6e3bf.tar.gz glibc-580716898d5e80784f1993a0129d1b821bc6e3bf.tar.xz glibc-580716898d5e80784f1993a0129d1b821bc6e3bf.zip | |
Merge branch 'master' into bug13658-branch
Diffstat (limited to 'sysdeps/ieee754/ldbl-96/s_scalblnl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/s_scalblnl.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sysdeps/ieee754/ldbl-96/s_scalblnl.c b/sysdeps/ieee754/ldbl-96/s_scalblnl.c index ada587b9d5..755a212555 100644 --- a/sysdeps/ieee754/ldbl-96/s_scalblnl.c +++ b/sysdeps/ieee754/ldbl-96/s_scalblnl.c @@ -43,11 +43,13 @@ __scalblnl (long double x, long int n) k = (hx&0x7fff) - 63; } if (__builtin_expect(k==0x7fff, 0)) return x+x; /* NaN or Inf */ - k = k+n; - if (__builtin_expect(n> 50000 || k > 0x7ffe, 0)) - return huge*__copysignl(huge,x); /* overflow */ if (__builtin_expect(n< -50000, 0)) return tiny*__copysignl(tiny,x); + if (__builtin_expect(n> 50000 || k+n > 0x7ffe, 0)) + return huge*__copysignl(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_LDOUBLE_EXP(x,(es&0x8000)|k); return x;} if (k <= -63) |