2.16741683877804819444e-51, /* 0x3569F31D, 0x00000000 */
};
-static const double
-two24 = 1.67772160000000000000e+07, /* 0x41700000, 0x00000000 */
-twon24 = 5.96046447753906250000e-08; /* 0x3E700000, 0x00000000 */
-
int __rem_pio2_large(double *x, double *y, int e0, int nx, int prec)
{
int32_t jz,jx,jv,jp,jk,carry,n,iq[20],i,j,k,m,q0,ih;
recompute:
/* distill q[] into iq[] reversingly */
for (i=0,j=jz,z=q[jz]; j>0; i++,j--) {
- fw = (double)((int32_t)(twon24* z));
- iq[i] = (int32_t)(z-two24*fw);
+ fw = (double)(int32_t)(0x1p-24*z);
+ iq[i] = (int32_t)(z - 0x1p24*fw);
z = q[j-1]+fw;
}
if (carry == 0) {
if (j != 0) {
carry = 1;
- iq[i] = 0x1000000- j;
+ iq[i] = 0x1000000 - j;
}
} else
iq[i] = 0xffffff - j;
}
} else { /* break z into 24-bit if necessary */
z = scalbn(z,-q0);
- if (z >= two24) {
- fw = (double)((int32_t)(twon24*z));
- iq[jz] = (int32_t)(z-two24*fw);
+ if (z >= 0x1p24) {
+ fw = (double)(int32_t)(0x1p-24*z);
+ iq[jz] = (int32_t)(z - 0x1p24*fw);
jz += 1;
q0 += 24;
iq[jz] = (int32_t)fw;
fw = scalbn(1.0,q0);
for (i=jz; i>=0; i--) {
q[i] = fw*(double)iq[i];
- fw *= twon24;
+ fw *= 0x1p-24;
}
/* compute PIo2[0,...,jp]*q[jz,...,0] */