1 files changed, 0 insertions, 48 deletions
diff --git a/winsup/mingw/mingwex/complex/casin.c b/winsup/mingw/mingwex/complex/casin.c
deleted file mode 100644
index cd79767b5..000000000
--- a/winsup/mingw/mingwex/complex/casin.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
-   casin.c
-   Contributed by Danny Smith
-   2003-10-20
-*/
-
-#include <math.h>
-#include <complex.h>
-
-/* casin (Z ) = -I * clog(I * Z + csqrt (1.0 - Z * Z))) */
-
-double complex casin (double complex Z)
-{
-  double complex Res;
-  double x, y;
-
-  x = __real__ Z;
-  y = __imag__ Z;
-
-  if (y == 0.0)
-    {
-      __real__ Res = asin (x);
-      __imag__ Res = 0.0;
-    }
-  else  /* -I * clog(I * Z + csqrt(1.0 - Z * Z))) */
-    {
-      double complex ZZ;
-                                 
-      /* Z * Z = ((x - y) * (x + y)) + (2.0 * x * y) * I */
-      /* calculate 1 - Z * Z */
-      __real__ ZZ = 1.0 - (x - y) * (x + y);
-      __imag__ ZZ = -2.0 * x * y;
-      ZZ = csqrt (ZZ);
-
-
-      /* add  I * Z  to ZZ */
-
-      __real__ ZZ -= y;
-      __imag__ ZZ += x;
-
-      ZZ = clog (ZZ);
-
-      /* mult by -I */
-      __real__ Res = __imag__ ZZ;
-      __imag__ Res = - __real__ ZZ;  
-    }
-  return (Res);
-}