Imported gcc-4.4.3

[msp430-gcc.git] / libjava / java / lang / s_tan.c

diff --git a/libjava/java/lang/s_tan.c b/libjava/java/lang/s_tan.c
deleted file mode 100644 (file)
index 20995fc..0000000
--- a/libjava/java/lang/s_tan.c
+++ /dev/null
@@ -1,114 +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.
- * ====================================================
- */
-
-
-/*
-
-FUNCTION
-        <<tan>>, <<tanf>>---tangent
-
-INDEX
-tan
-INDEX
-tanf
-
-ANSI_SYNOPSIS
-        #include <math.h>
-        double tan(double <[x]>);
-        float tanf(float <[x]>);
-
-TRAD_SYNOPSIS
-        #include <math.h>
-        double tan(<[x]>)
-        double <[x]>;
-
-        float tanf(<[x]>)
-        float <[x]>;
-
-
-DESCRIPTION
-<<tan>> computes the tangent of the argument <[x]>.
-Angles are specified in radians.
-
-<<tanf>> is identical, save that it takes and returns <<float>> values.
-
-RETURNS
-The tangent of <[x]> is returned.
-
-PORTABILITY
-<<tan>> is ANSI. <<tanf>> is an extension.
-*/
-
-/* 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 "fdlibm.h"
-
-#ifndef _DOUBLE_IS_32BITS
-
-#ifdef __STDC__
-       double tan(double x)
-#else
-       double tan(x)
-       double x;
-#endif
-{
-       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 */
-       }
-}
-
-#endif /* _DOUBLE_IS_32BITS */