1 files changed, 7 insertions, 11 deletions

diff --git a/contrib/libf2c/libF77/z_sin.c b/contrib/libf2c/libF77/z_sin.c
index 94456c9c30a3..e24caff927e9 100644
--- a/contrib/libf2c/libF77/z_sin.c
+++ b/contrib/libf2c/libF77/z_sin.c
@@ -2,18 +2,14 @@
 
 #ifdef KR_headers
 double sin(), cos(), sinh(), cosh();
-VOID z_sin(resx, z) doublecomplex *resx, *z;
+VOID z_sin(r, z) doublecomplex *r, *z;
 #else
 #undef abs
-#include <math.h>
-void z_sin(doublecomplex *resx, doublecomplex *z)
+#include "math.h"
+void z_sin(doublecomplex *r, doublecomplex *z)
 #endif
 {
-doublecomplex 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;
-}
+	double zi = z->i, zr = z->r;
+	r->r = sin(zr) * cosh(zi);
+	r->i = cos(zr) * sinh(zi);
+	}