1 files changed, 13 insertions, 0 deletions
diff --git a/contrib/libf2c/libF77/c_log.c b/contrib/libf2c/libF77/c_log.c
new file mode 100644
index 0000000..7d5b951
--- /dev/null
+++ b/contrib/libf2c/libF77/c_log.c
@@ -0,0 +1,13 @@
+#include "f2c.h"
+
+#undef abs
+#include "math.h"
+extern double f__cabs (double, double);
+
+void
+c_log (complex * r, complex * z)
+{
+  double zi, zr;
+  r->i = atan2 (zi = z->i, zr = z->r);
+  r->r = log (f__cabs (zr, zi));
+}