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-rw-r--r--Build/source/utils/pmx/pmx-2.6.18/libf2c/z_div.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/Build/source/utils/pmx/pmx-2.6.18/libf2c/z_div.c b/Build/source/utils/pmx/pmx-2.6.18/libf2c/z_div.c
new file mode 100644
index 00000000000..b61f03b8efc
--- /dev/null
+++ b/Build/source/utils/pmx/pmx-2.6.18/libf2c/z_div.c
@@ -0,0 +1,50 @@
+#include "f2c.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef KR_headers
+extern VOID sig_die();
+VOID z_div(c, a, b) doublecomplex *a, *b, *c;
+#else
+extern void sig_die(char*, int);
+void z_div(doublecomplex *c, doublecomplex *a, doublecomplex *b)
+#endif
+{
+ double ratio, den;
+ double abr, abi, cr;
+
+ if( (abr = b->r) < 0.)
+ abr = - abr;
+ if( (abi = b->i) < 0.)
+ abi = - abi;
+ if( abr <= abi )
+ {
+ if(abi == 0) {
+#ifdef IEEE_COMPLEX_DIVIDE
+ if (a->i != 0 || a->r != 0)
+ abi = 1.;
+ c->i = c->r = abi / abr;
+ return;
+#else
+ sig_die("complex division by zero", 1);
+#endif
+ }
+ ratio = b->r / b->i ;
+ den = b->i * (1 + ratio*ratio);
+ cr = (a->r*ratio + a->i) / den;
+ c->i = (a->i*ratio - a->r) / den;
+ }
+
+ else
+ {
+ ratio = b->i / b->r ;
+ den = b->r * (1 + ratio*ratio);
+ cr = (a->r + a->i*ratio) / den;
+ c->i = (a->i - a->r*ratio) / den;
+ }
+ c->r = cr;
+ }
+#ifdef __cplusplus
+}
+#endif