1 files changed, 19 insertions, 9 deletions
diff --git a/test/math/signgam.c b/test/math/signgam.c
index c60375aec..2f1adbaad 100644
--- a/test/math/signgam.c
+++ b/test/math/signgam.c
@@ -1,18 +1,28 @@
 #define _XOPEN_SOURCE 600
 #include <math.h>
+#include <float.h>
 #include <stdio.h>
 
 double zero = 0.0;
 double mzero;
 
-int
-main (void)
+int main(void)
 {
-  double d;
-  mzero = copysign (zero, -1.0);
-  d = lgamma (zero);
-  printf ("%g %d\n", d, signgam);
-  d = lgamma (mzero);
-  printf ("%g %d\n", d, signgam);
-  return 0;
+	double d;
+	int errors = 0;
+
+	mzero = copysign(zero, -1.0);
+
+	d = lgamma(zero);
+	printf("%g %d\n", d, signgam);
+	errors += !(d == HUGE_VAL);
+	errors += !(signgam == 1);
+
+	d = lgamma(mzero);
+	printf("%g %d\n", d, signgam);
+	errors += !(d == HUGE_VAL);
+	errors += !(signgam == -1);
+
+	printf("Errors: %d\n", errors);
+	return errors;
 }