diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128/s_scalbnl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/s_scalbnl.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_scalbnl.c b/sysdeps/ieee754/ldbl-128/s_scalbnl.c index b9de0f74fc..a928ecccec 100644 --- a/sysdeps/ieee754/ldbl-128/s_scalbnl.c +++ b/sysdeps/ieee754/ldbl-128/s_scalbnl.c @@ -46,10 +46,12 @@ long double __scalbnl (long double x, int n) k = ((hx>>48)&0x7fff) - 114; } if (k==0x7fff) return x+x; /* NaN or Inf */ - k = k+n; - if (n> 50000 || k > 0x7ffe) - return huge*__copysignl(huge,x); /* overflow */ if (n< -50000) return tiny*__copysignl(tiny,x); /*underflow*/ + if (n> 50000 || k+n > 0x7ffe) + 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 (k > 0) /* normal result */ {SET_LDOUBLE_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48)); return x;} if (k <= -114) |