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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/ieee754/ldbl-128ibm/s_tanl.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_tanl.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/s_tanl.c78
1 files changed, 0 insertions, 78 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_tanl.c b/sysdeps/ieee754/ldbl-128ibm/s_tanl.c
deleted file mode 100644
index ea5a7f0..0000000
--- a/sysdeps/ieee754/ldbl-128ibm/s_tanl.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/* s_tanl.c -- long double version of s_tan.c.
- * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz.
- */
-
-/* @(#)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.
- * ====================================================
- */
-
-/* tanl(x)
- * Return tangent function of x.
- *
- * kernel function:
- * __kernel_tanl ... tangent function on [-pi/4,pi/4]
- * __ieee754_rem_pio2l ... 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"
-#include <math_ldbl_opt.h>
-
-#ifdef __STDC__
- long double __tanl(long double x)
-#else
- long double __tanl(x)
- long double x;
-#endif
-{
- long double y[2],z=0.0L;
- int64_t n, ix;
-
- /* High word of x. */
- GET_LDOUBLE_MSW64(ix,x);
-
- /* |x| ~< pi/4 */
- ix &= 0x7fffffffffffffffLL;
- if(ix <= 0x3fe921fb54442d10LL) return __kernel_tanl(x,z,1);
-
- /* tanl(Inf or NaN) is NaN */
- else if (ix>=0x7ff0000000000000LL) return x-x; /* NaN */
-
- /* argument reduction needed */
- else {
- n = __ieee754_rem_pio2l(x,y);
- return __kernel_tanl(y[0],y[1],1-((n&1)<<1)); /* 1 -- n even
- -1 -- n odd */
- }
-}
-long_double_symbol (libm, __tanl, tanl);