musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/math/sincos.c b/src/math/sincos.c
index 442e285e..49f8a098 100644
--- a/src/math/sincos.c
+++ b/src/math/sincos.c

@@ -15,7 +15,8 @@

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;

@@ -24,11 +25,10 @@ void sincos(double x, double *sin, double *cos)

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);