use #if LDBL_MANT_DIG == ... instead of custom LD80 etc macros

[libm] / src / math / logbl.c

diff --git a/src/math/logbl.c b/src/math/logbl.c
index 58d8eea..5d04abd 100644 (file)
--- a/src/math/logbl.c
+++ b/src/math/logbl.c
@@ -1,6 +1,6 @@
 #include <limits.h>
 #include "libm.h"
-#if LD64
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
 long double logbl(long double x)
 {
        return logb(x);