1#include "libm.h"
2
3#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
4long double sinhl(long double x)
5{
6 return sinh(x);
7}
8#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
9long double sinhl(long double x)
10{
11 union ldshape u = {x};
12 unsigned ex = u.i.se & 0x7fff;
13 long double h, t, absx;
14
15 h = 0.5;
16 if (u.i.se & 0x8000)
17 h = -h;
18 /* |x| */
19 u.i.se = ex;
20 absx = u.f;
21
22 /* |x| < log(LDBL_MAX) */
23 if (ex < 0x3fff+13 || (ex == 0x3fff+13 && u.i.m>>32 < 0xb17217f7)) {
24 t = expm1l(absx);
25 if (ex < 0x3fff) {
26 if (ex < 0x3fff-32)
27 return x;
28 return h*(2*t - t*t/(1+t));
29 }
30 return h*(t + t/(t+1));
31 }
32
33 /* |x| > log(LDBL_MAX) or nan */
34 t = expl(0.5*absx);
35 return h*t*t;
36}
37#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
38// TODO: broken implementation to make things compile
39long double sinhl(long double x)
40{
41 return sinh(x);
42}
43#endif