math: raise invalid flag in ilogb*.c on +-0, +-inf and nan

[musl] / src / math / lgammal.c

diff --git a/src/math/lgammal.c b/src/math/lgammal.c
index 8fae1be..56d7866 100644 (file)
--- a/src/math/lgammal.c
+++ b/src/math/lgammal.c
@@ -89,6 +89,8 @@
 #include "libm.h"
 
 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+double __lgamma_r(double x, int *sg);
+
 long double __lgammal_r(long double x, int *sg)
 {
        return __lgamma_r(x, sg);