diff options
Diffstat (limited to 'sysdeps/libm-ieee754/s_scalbnf.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_scalbnf.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/sysdeps/libm-ieee754/s_scalbnf.c b/sysdeps/libm-ieee754/s_scalbnf.c index 3a83e54c56..4799c825c9 100644 --- a/sysdeps/libm-ieee754/s_scalbnf.c +++ b/sysdeps/libm-ieee754/s_scalbnf.c @@ -8,7 +8,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -31,10 +31,10 @@ huge = 1.0e+30, tiny = 1.0e-30; #ifdef __STDC__ - float __scalbnf (float x, int n) + float __scalbnf (float x, long int n) #else float __scalbnf (x,n) - float x; int n; + float x; long int n; #endif { int32_t k,ix; @@ -44,18 +44,18 @@ tiny = 1.0e-30; if ((ix&0x7fffffff)==0) return x; /* +-0 */ x *= two25; GET_FLOAT_WORD(ix,x); - k = ((ix&0x7f800000)>>23) - 25; - if (n< -50000) return tiny*x; /*underflow*/ + k = ((ix&0x7f800000)>>23) - 25; } if (k==0xff) return x+x; /* NaN or Inf */ - k = k+n; - if (k > 0xfe) return huge*copysignf(huge,x); /* overflow */ + k = k+n; + if (n> 50000 || k > 0xfe) + return huge*copysignf(huge,x); /* overflow */ + if (n< -50000) + return tiny*copysignf(tiny,x); /*underflow*/ if (k > 0) /* normal result */ {SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); return x;} if (k <= -25) - if (n > 50000) /* in case integer overflow in n+k */ - return huge*copysignf(huge,x); /*overflow*/ - else return tiny*copysignf(tiny,x); /*underflow*/ + return tiny*copysignf(tiny,x); /*underflow*/ k += 25; /* subnormal result */ SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); return x*twom25; |