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#include "libm.h" // for ldshape, ldshape::(anonymous), __sinl, __cosl
#include <float.h> // for LDBL_MANT_DIG, LDBL_MAX_EXP
#include <math.h> // for sinl, M_PI_4
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double sinl(long double x)
{
return sin(x);
}
#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
long double sinl(long double x)
{
union ldshape u = { x };
unsigned n;
long double y[2], hi, lo;
u.i.se &= 0x7fff;
if (u.i.se == 0x7fff)
return x - x;
if (u.f < M_PI_4) {
if (u.i.se < 0x3fff - LDBL_MANT_DIG / 2) {
/* raise inexact if x!=0 and underflow if subnormal */
FORCE_EVAL(u.i.se == 0 ? x * 0x1p-120f : x + 0x1p120f);
return x;
}
return __sinl(x, 0.0, 0);
}
n = __rem_pio2l(x, y);
hi = y[0];
lo = y[1];
switch (n & 3) {
case 0:
return __sinl(hi, lo, 1);
case 1:
return __cosl(hi, lo);
case 2:
return -__sinl(hi, lo, 1);
case 3:
default:
return -__cosl(hi, lo);
}
}
#endif
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