1 /* origin: FreeBSD /usr/src/lib/msun/src/s_sinl.c */
3 * Copyright (c) 2007 Steven G. Kargl
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
32 long double sinl(long double x)
36 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
37 long double sinl(long double x)
47 /* If x = NaN or Inf, then sin(x) = NaN. */
48 if (z.bits.exp == 0x7fff)
49 return (x - x) / (x - x);
51 /* |x| < (double)pi/4 */
54 if (z.bits.exp < 0x3fff - 64) {
55 /* raise inexact if x!=0 and underflow if subnormal */
56 FORCE_EVAL(z.bits.exp == 0 ? x/0x1p120f : x+0x1p120f);
59 return __sinl(x, 0.0, 0);
62 n = __rem_pio2l(x, y);
67 hi = __sinl(hi, lo, 1);
73 hi = -__sinl(hi, lo, 1);