1 files changed, 15 insertions, 0 deletions
diff --git a/lib/libF77/z_sin.c b/lib/libF77/z_sin.c
new file mode 100644
index 0000000..577be1d
--- /dev/null
+++ b/lib/libF77/z_sin.c
@@ -0,0 +1,15 @@
+#include "f2c.h"
+
+#ifdef KR_headers
+double sin(), cos(), sinh(), cosh();
+VOID z_sin(r, z) doublecomplex *r, *z;
+#else
+#undef abs
+#include "math.h"
+void z_sin(doublecomplex *r, doublecomplex *z)
+#endif
+{
+	double zr = z->r;
+	r->r = sin(zr) * cosh(z->i);
+	r->i = cos(zr) * sinh(z->i);
+	}