1 files changed, 18 insertions, 0 deletions
diff --git a/unix/f2c/libf2c/r_abs.c b/unix/f2c/libf2c/r_abs.c
new file mode 100644
index 00000000..f3291fb4
--- /dev/null
+++ b/unix/f2c/libf2c/r_abs.c
@@ -0,0 +1,18 @@
+#include "f2c.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef KR_headers
+double r_abs(x) real *x;
+#else
+double r_abs(real *x)
+#endif
+{
+if(*x >= 0)
+	return(*x);
+return(- *x);
+}
+#ifdef __cplusplus
+}
+#endif