diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32')
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_log1pf.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sysdeps/ieee754/flt-32/s_log1pf.c b/sysdeps/ieee754/flt-32/s_log1pf.c index 94c33fca16..83a09f1414 100644 --- a/sysdeps/ieee754/flt-32/s_log1pf.c +++ b/sysdeps/ieee754/flt-32/s_log1pf.c @@ -13,6 +13,7 @@ * ==================================================== */ +#include <float.h> #include <math.h> #include <math_private.h> @@ -48,7 +49,14 @@ __log1pf(float x) if(ax<0x31000000) { /* |x| < 2**-29 */ math_force_eval(two25+x); /* raise inexact */ if (ax<0x24800000) /* |x| < 2**-54 */ + { + if (fabsf (x) < FLT_MIN) + { + float force_underflow = x * x; + math_force_eval (force_underflow); + } return x; + } else return x - x*x*(float)0.5; } |