the threshold was wrong so expm1f overflowed to inf a bit too early
and on most targets uint32_t compare is faster than float compare so
use that.
this also fixes sinhf incorrectly returning nan for some values where
the internal expm1f overflowed.
#include "libm.h"
static const float
-o_threshold = 8.8721679688e+01, /* 0x42b17180 */
ln2_hi = 6.9313812256e-01, /* 0x3f317180 */
ln2_lo = 9.0580006145e-06, /* 0x3717f7d1 */
invln2 = 1.4426950216e+00, /* 0x3fb8aa3b */
return x;
if (sign)
return -1;
- if (x > o_threshold) {
+ if (hx > 0x42b17217) { /* x > log(FLT_MAX) */
x *= 0x1p127f;
return x;
}