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implement the 'm' (malloc) modifier for scanf
[musl]
/
src
/
math
/
sin.c
diff --git
a/src/math/sin.c
b/src/math/sin.c
index
8e430f8
..
055e215
100644
(file)
--- a/
src/math/sin.c
+++ b/
src/math/sin.c
@@
-44,21
+44,22
@@
double sin(double x)
{
double sin(double x)
{
- double y[2], z=0.0;
- int32_t n, ix;
+ double y[2];
+ uint32_t ix;
+ unsigned n;
/* High word of x. */
GET_HIGH_WORD(ix, x);
/* High word of x. */
GET_HIGH_WORD(ix, x);
+ ix &= 0x7fffffff;
/* |x| ~< pi/4 */
/* |x| ~< pi/4 */
- ix &= 0x7fffffff;
if (ix <= 0x3fe921fb) {
if (ix < 0x3e500000) { /* |x| < 2**-26 */
if (ix <= 0x3fe921fb) {
if (ix < 0x3e500000) { /* |x| < 2**-26 */
- /* raise inexact if x != 0 */
- if ((int)x == 0)
-
return x;
+ /* raise inexact if x != 0
and underflow if subnormal
*/
+ FORCE_EVAL(ix < 0x00100000 ? x/0x1p120f : x+0x1p120f);
+ return x;
}
}
- return __sin(x,
z
, 0);
+ return __sin(x,
0.0
, 0);
}
/* sin(Inf or NaN) is NaN */
}
/* sin(Inf or NaN) is NaN */