1 files changed, 0 insertions, 73 deletions
diff --git a/StdLib/LibC/Math/s_tan.c b/StdLib/LibC/Math/s_tan.c
deleted file mode 100644
index 6c2a26de5a..0000000000
--- a/StdLib/LibC/Math/s_tan.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/* @(#)s_tan.c 5.1 93/09/24 */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-#include  <LibConfig.h>
-#include  <sys/EfiCdefs.h>
-#if defined(LIBM_SCCS) && !defined(lint)
-__RCSID("$NetBSD: s_tan.c,v 1.10 2002/05/26 22:01:58 wiz Exp $");
-#endif
-
-/* tan(x)
- * Return tangent function of x.
- *
- * kernel function:
- *  __kernel_tan    ... tangent function on [-pi/4,pi/4]
- *  __ieee754_rem_pio2  ... argument reduction routine
- *
- * Method.
- *      Let S,C and T denote the sin, cos and tan respectively on
- *  [-PI/4, +PI/4]. Reduce the argument x to y1+y2 = x-k*pi/2
- *  in [-pi/4 , +pi/4], and let n = k mod 4.
- *  We have
- *
- *          n        sin(x)      cos(x)        tan(x)
- *     ----------------------------------------------------------
- *      0        S     C     T
- *      1        C    -S    -1/T
- *      2       -S    -C     T
- *      3       -C     S    -1/T
- *     ----------------------------------------------------------
- *
- * Special cases:
- *      Let trig be any of sin, cos, or tan.
- *      trig(+-INF)  is NaN, with signals;
- *      trig(NaN)    is that NaN;
- *
- * Accuracy:
- *  TRIG(x) returns trig(x) nearly rounded
- */
-
-#include "math.h"
-#include "math_private.h"
-
-double
-tan(double x)
-{
-  double y[2],z=0.0;
-  int32_t n, ix;
-
-    /* High word of x. */
-  GET_HIGH_WORD(ix,x);
-
-    /* |x| ~< pi/4 */
-  ix &= 0x7fffffff;
-  if(ix <= 0x3fe921fb) return __kernel_tan(x,z,1);
-
-    /* tan(Inf or NaN) is NaN */
-  else if (ix>=0x7ff00000) return x-x;    /* NaN */
-
-    /* argument reduction needed */
-  else {
-      n = __ieee754_rem_pio2(x,y);
-      return __kernel_tan(y[0],y[1],1-((n&1)<<1)); /*   1 -- n even
-              -1 -- n odd */
-  }
-}