int ilogbl(long double x)
{
union ldshape u = {x};
- uint64_t m = u.bits.m;
- int e = u.bits.exp;
+ uint64_t m = u.i.m;
+ int e = u.i.se & 0x7fff;
if (!e) {
if (m == 0) {
- FORCE_EVAL(0/0.0f);
+ FORCE_EVAL(x/x);
return FP_ILOGB0;
}
/* subnormal x */
if (e == 0x7fff) {
FORCE_EVAL(0/0.0f);
/* in ld80 msb is set in inf */
- return m & (uint64_t)-1>>1 ? FP_ILOGBNAN : INT_MAX;
+ return m << 1 ? FP_ILOGBNAN : INT_MAX;
}
return e - 0x3fff;
}