1 files changed, 1 insertions, 1 deletions
diff --git a/builtin.c b/builtin.c
index fc5dc31e..867a07f9 100644
--- a/builtin.c
+++ b/builtin.c
@@ -4275,7 +4275,7 @@ format_nan_inf(NODE *n, char format)
 
 			goto fmt;
 		} else if (mpfr_inf_p(n->mpg_numbr)) {
-			strcpy(buf, mpfr_sgn(n->mpg_numbr) < 0 ? "-inf" : "+inf");
+			strcpy(buf, mpfr_signbit(n->mpg_numbr) ? "-inf" : "+inf");
 
 			goto fmt;
 		} else