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libm/math: Set errno to ERANGE for pow(0, -y)

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POSIX says that the errno for pow(0, -y) should be ERANGE instead of
EDOM.

https://pubs.opengroup.org/onlinepubs/9699919799/functions/pow.html

Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard via Newlib 2020-08-04 15:22:22 -07:00 committed by Ken Brown
parent bd14299346
commit e39f26c0ba
2 changed files with 2 additions and 4 deletions
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3
newlib/libm/math/w_pow.c
View File

@ -84,8 +84,7 @@ PORTABILITY
} }
if(finite(y)&&y<0.0) { if(finite(y)&&y<0.0) {
/* 0**neg */ /* 0**neg */
errno = EDOM; errno = ERANGE;
return -HUGE_VAL;
} }
return z; return z;
} }

3
newlib/libm/math/wf_pow.c
View File

@ -50,8 +50,7 @@
} }
if(finitef(y)&&y<0.0f) { if(finitef(y)&&y<0.0f) {
/* 0**neg */ /* 0**neg */
errno = EDOM; errno = ERANGE;
return -HUGE_VALF;
} }
return z; return z;
} }