1 files changed, 2 insertions, 2 deletions
diff --git a/src/math/logb.c b/src/math/logb.c
index 624425a8..7f8bdfae 100644
--- a/src/math/logb.c
+++ b/src/math/logb.c
@@ -1,4 +1,4 @@
-#include "libm.h"
+#include <math.h>
 
 /*
 special cases:
@@ -12,6 +12,6 @@ double logb(double x)
 	if (!isfinite(x))
 		return x * x;
 	if (x == 0)
-		return -1/(x+0);
+		return -1/(x*x);
 	return ilogb(x);
 }