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#include "libm.h" // for ldshape, ldshape::(anonymous)
#include <float.h> // for LDBL_MANT_DIG, LDBL_MAX_EXP
#include <math.h> // for expl, expm1l, sinhl
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double sinhl(long double x)
{
return sinh(x);
}
#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
long double sinhl(long double x)
{
union ldshape u = { x };
unsigned ex = u.i.se & 0x7fff;
long double h, t, absx;
h = 0.5;
if (u.i.se & 0x8000)
h = -h;
/* |x| */
u.i.se = ex;
absx = u.f;
/* |x| < log(LDBL_MAX) */
if (ex < 0x3fff + 13 ||
(ex == 0x3fff + 13 && u.i.m >> 32 < 0xb17217f7)) {
t = expm1l(absx);
if (ex < 0x3fff) {
if (ex < 0x3fff - 32)
return x;
return h * (2 * t - t * t / (1 + t));
}
return h * (t + t / (t + 1));
}
/* |x| > log(LDBL_MAX) or nan */
t = expl(0.5 * absx);
return h * t * t;
}
#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
// TODO: broken implementation to make things compile
long double sinhl(long double x)
{
return sinh(x);
}
#endif
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