1 files changed, 9 insertions, 0 deletions
diff --git a/libf2c/libF77/d_sign.c b/libf2c/libF77/d_sign.c
new file mode 100644
index 0000000..da8d24b
--- /dev/null
+++ b/libf2c/libF77/d_sign.c
@@ -0,0 +1,9 @@
+#include "f2c.h"
+
+double
+d_sign (doublereal * a, doublereal * b)
+{
+  double x;
+  x = (*a >= 0 ? *a : -*a);
+  return (*b >= 0 ? x : -x);
+}