1 files changed, 12 insertions, 8 deletions
diff --git a/contrib/libf2c/libF77/z_exp.c b/contrib/libf2c/libF77/z_exp.c
index ecf84296d720..85fb63e42095 100644
--- a/contrib/libf2c/libF77/z_exp.c
+++ b/contrib/libf2c/libF77/z_exp.c
@@ -2,16 +2,20 @@
 
 #ifdef KR_headers
 double exp(), cos(), sin();
-VOID z_exp(r, z) doublecomplex *r, *z;
+VOID z_exp(resx, z) doublecomplex *resx, *z;
 #else
 #undef abs
-#include "math.h"
-void z_exp(doublecomplex *r, doublecomplex *z)
+#include <math.h>
+void z_exp(doublecomplex *resx, doublecomplex *z)
 #endif
 {
-	double expx, zi = z->i;
+double expx;
+doublecomplex res;
 
-	expx = exp(z->r);
-	r->r = expx * cos(zi);
-	r->i = expx * sin(zi);
-	}
+expx = exp(z->r);
+res.r = expx * cos(z->i);
+res.i = expx * sin(z->i);
+
+resx->r = res.r;
+resx->i = res.i;
+}