Repatch (from linux) of OSX IRAF

1 files changed, 33 insertions, 0 deletions

diff --git a/unix/f2c/libf2c/cabs.c b/unix/f2c/libf2c/cabs.c
new file mode 100644
index 00000000..84750d50
--- /dev/null
+++ b/unix/f2c/libf2c/cabs.c
@@ -0,0 +1,33 @@
+#ifdef KR_headers
+extern double sqrt();
+double f__cabs(real, imag) double real, imag;
+#else
+#undef abs
+#include "math.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+double f__cabs(double real, double imag)
+#endif
+{
+double temp;
+
+if(real < 0)
+	real = -real;
+if(imag < 0)
+	imag = -imag;
+if(imag > real){
+	temp = real;
+	real = imag;
+	imag = temp;
+}
+if((real+imag) == real)
+	return(real);
+
+temp = imag/real;
+temp = real*sqrt(1.0 + temp*temp);  /*overflow!!*/
+return(temp);
+}
+#ifdef __cplusplus
+}
+#endif