Virgin import of EGCS 1.1.2's libf2c

1 files changed, 21 insertions, 0 deletions

diff --git a/contrib/libf2c/libF77/c_sin.c b/contrib/libf2c/libF77/c_sin.c
new file mode 100644
index 0000000..7bf3e39
--- /dev/null
+++ b/contrib/libf2c/libF77/c_sin.c
@@ -0,0 +1,21 @@
+#include "f2c.h"
+
+#ifdef KR_headers
+extern double sin(), cos(), sinh(), cosh();
+
+VOID c_sin(resx, z) complex *resx, *z;
+#else
+#undef abs
+#include <math.h>
+
+void c_sin(complex *resx, complex *z)
+#endif
+{
+complex res;
+
+res.r = sin(z->r) * cosh(z->i);
+res.i = cos(z->r) * sinh(z->i);
+
+resx->r = res.r;
+resx->i = res.i;
+}