diff options
Diffstat (limited to 'lib/libm/noieee_src/n_acosh.c')
| -rw-r--r-- | lib/libm/noieee_src/n_acosh.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/libm/noieee_src/n_acosh.c b/lib/libm/noieee_src/n_acosh.c index 9bd3d99cbec..975bb690da4 100644 --- a/lib/libm/noieee_src/n_acosh.c +++ b/lib/libm/noieee_src/n_acosh.c @@ -88,9 +88,8 @@ acosh(x) { double t,big=1.E20; /* big+1==big */ -#if !defined(__vax__)&&!defined(tahoe) - if(x!=x) return(x); /* x is NaN */ -#endif /* !defined(__vax__)&&!defined(tahoe) */ + if (isnan(x)) + return (x); /* return log1p(x) + log(2) if x is large */ if(x>big) {t=log1p(x)+ln2lo; return(t+ln2hi);} |