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,
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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 #include "__rem_pio2l.h"
39 long double sinl(long double x)
50 /* If x = +-0 or x is a subnormal number, then sin(x) = x */
54 /* If x = NaN or Inf, then sin(x) = NaN. */
55 if (z.bits.exp == 32767)
56 return (x - x) / (x - x);
58 /* Optimize the case where x is already within range. */
60 hi = __sinl(z.e, 0, 0);
64 e0 = __rem_pio2l(x, y);
70 hi = __sinl(hi, lo, 1);
76 hi = - __sinl(hi, lo, 1);
79 hi = - __cosl(hi, lo);