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* sysdeps/ieee754/flt-32/e_powf.c: Handle x == +-1 correctly.
	* sysdeps/ieee754/dbl-64/e_pow.c: Likewise.
This commit is contained in:
Ulrich Drepper 2001-02-19 23:16:05 +00:00
parent d210ca02ec
commit f14bd805a7
3 changed files with 11 additions and 0 deletions
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ChangeLog
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@ -1,5 +1,8 @@
2001-02-19 Ulrich Drepper <drepper@redhat.com>
* sysdeps/ieee754/flt-32/e_powf.c: Handle x == +-1 correctly.
* sysdeps/ieee754/dbl-64/e_pow.c: Likewise.
* sysdeps/generic/e_scalb.c: Set invalid exception for invalid
parameters.
* sysdeps/generic/e_scalbf.c: New file.

4
sysdeps/ieee754/dbl-64/e_pow.c
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@ -149,6 +149,10 @@ C[] = {
/* y==zero: x**0 = 1 */
if((iy|ly)==0) return C[1];
/* x==+-1 */
if(x == 1.0) return C[1];
if(x == -1.0 && isinf(y)) return C[1];
/* +-NaN return x+y */
if(ix > 0x7ff00000 || ((ix==0x7ff00000)&&(lx!=0)) ||
iy > 0x7ff00000 || ((iy==0x7ff00000)&&(ly!=0)))

4
sysdeps/ieee754/flt-32/e_powf.c
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@ -76,6 +76,10 @@ ivln2_l = 7.0526075433e-06; /* 0x36eca570 =1/ln2 tail*/
/* y==zero: x**0 = 1 */
if(iy==0) return one;
/* x==+-1 */
if(x == 1.0) return one;
if(x == -1.0 && isinf(y)) return one;
/* +-NaN return x+y */
if(ix > 0x7f800000 ||
iy > 0x7f800000)