1 files changed, 16 insertions, 0 deletions
diff --git a/lib/libF77/c_sin.c b/lib/libF77/c_sin.c
new file mode 100644
index 0000000..ffdef1d1
--- /dev/null
+++ b/lib/libF77/c_sin.c
@@ -0,0 +1,16 @@
+#include "f2c.h"
+
+#ifdef KR_headers
+extern double sin(), cos(), sinh(), cosh();
+
+VOID c_sin(r, z) complex *r, *z;
+#else
+#undef abs
+#include "math.h"
+
+void c_sin(complex *r, complex *z)
+#endif
+{
+r->r = sin(z->r) * cosh(z->i);
+r->i = cos(z->r) * sinh(z->i);
+}