aboutsummaryrefslogtreecommitdiff
path: root/lib/mlibc/options/ansi/musl-generic-math/asinl.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/asinl.c')
-rw-r--r--lib/mlibc/options/ansi/musl-generic-math/asinl.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/asinl.c b/lib/mlibc/options/ansi/musl-generic-math/asinl.c
deleted file mode 100644
index 347c535..0000000
--- a/lib/mlibc/options/ansi/musl-generic-math/asinl.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* origin: FreeBSD /usr/src/lib/msun/src/e_asinl.c */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunSoft, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-/*
- * See comments in asin.c.
- * Converted to long double by David Schultz <das@FreeBSD.ORG>.
- */
-
-#include "libm.h"
-
-#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
-long double asinl(long double x)
-{
- return asin(x);
-}
-#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
-#include "__invtrigl.h"
-#if LDBL_MANT_DIG == 64
-#define CLOSETO1(u) (u.i.m>>56 >= 0xf7)
-#define CLEARBOTTOM(u) (u.i.m &= -1ULL << 32)
-#elif LDBL_MANT_DIG == 113
-#define CLOSETO1(u) (u.i.top >= 0xee00)
-#define CLEARBOTTOM(u) (u.i.lo = 0)
-#endif
-
-long double asinl(long double x)
-{
- union ldshape u = {x};
- long double z, r, s;
- uint16_t e = u.i.se & 0x7fff;
- int sign = u.i.se >> 15;
-
- if (e >= 0x3fff) { /* |x| >= 1 or nan */
- /* asin(+-1)=+-pi/2 with inexact */
- if (x == 1 || x == -1)
- return x*pio2_hi + 0x1p-120f;
- return 0/(x-x);
- }
- if (e < 0x3fff - 1) { /* |x| < 0.5 */
- if (e < 0x3fff - (LDBL_MANT_DIG+1)/2) {
- /* return x with inexact if x!=0 */
- FORCE_EVAL(x + 0x1p120f);
- return x;
- }
- return x + x*__invtrigl_R(x*x);
- }
- /* 1 > |x| >= 0.5 */
- z = (1.0 - fabsl(x))*0.5;
- s = sqrtl(z);
- r = __invtrigl_R(z);
- if (CLOSETO1(u)) {
- x = pio2_hi - (2*(s+s*r)-pio2_lo);
- } else {
- long double f, c;
- u.f = s;
- CLEARBOTTOM(u);
- f = u.f;
- c = (z - f*f)/(s + f);
- x = 0.5*pio2_hi-(2*s*r - (pio2_lo-2*c) - (0.5*pio2_hi-2*f));
- }
- return sign ? -x : x;
-}
-#endif