diff options
Diffstat (limited to 'sysdeps/libm-ieee754/s_isinfl.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_isinfl.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sysdeps/libm-ieee754/s_isinfl.c b/sysdeps/libm-ieee754/s_isinfl.c index 22dff75444..b499821441 100644 --- a/sysdeps/libm-ieee754/s_isinfl.c +++ b/sysdeps/libm-ieee754/s_isinfl.c @@ -9,7 +9,7 @@ static char rcsid[] = "$NetBSD: $"; #endif /* - * isinfl(x) returns 1 is x is inf, else 0; + * isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0; * no branching! */ @@ -25,9 +25,9 @@ static char rcsid[] = "$NetBSD: $"; { int32_t se,hx,lx; GET_LDOUBLE_WORDS(se,hx,lx,x); - se &= 0x7fff; - se ^= 0x7fff; - se |= hx | lx; - return (se == 0); + hx |= lx | ((se & 0x7fff) ^ 0x7fff); + hx |= -hx; + se &= 0x8000; + return ~(hx >> 31) & (1 - (se >> 14)); } weak_alias (__isinfl, isinfl) |