musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/math/ilogbl.c b/src/math/ilogbl.c
index ed9ddcbc..1512934f 100644
--- a/src/math/ilogbl.c
+++ b/src/math/ilogbl.c

@@ -14,15 +14,19 @@ int ilogbl(long double x)

int e = u.bits.exp;

if (!e) {

- if (m == 0)

+ if (m == 0) {

+ FORCE_EVAL(0/0.0f);

return FP_ILOGB0;

+ }

/* subnormal x */

for (e = -0x3fff+1; m < (uint64_t)1<<63; e--, m<<=1);

return e;

}

- if (e == 0x7fff)

+ 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 e - 0x3fff;

}

#endif