* ====================================================
*/
+#define _GNU_SOURCE
#include "libm.h"
void sincos(double x, double *sin, double *cos)
{
double y[2], s, c;
- uint32_t n, ix;
+ uint32_t ix;
+ unsigned n;
GET_HIGH_WORD(ix, x);
ix &= 0x7fffffff;
if (ix <= 0x3fe921fb) {
/* if |x| < 2**-27 * sqrt(2) */
if (ix < 0x3e46a09e) {
- /* raise inexact if x != 0 */
- if ((int)x == 0) {
- *sin = x;
- *cos = 1.0;
- }
+ /* raise inexact if x!=0 and underflow if subnormal */
+ FORCE_EVAL(ix < 0x00100000 ? x/0x1p120f : x+0x1p120f);
+ *sin = x;
+ *cos = 1.0;
return;
}
*sin = __sin(x, 0.0, 0);