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remove redundant check in memalign
[musl]
/
src
/
math
/
cosl.c
diff --git
a/src/math/cosl.c
b/src/math/cosl.c
index
25d9005
..
0794d28
100644
(file)
--- a/
src/math/cosl.c
+++ b/
src/math/cosl.c
@@
-39,30
+39,30
@@
long double cosl(long double x) {
long double cosl(long double x)
{
union IEEEl2bits z;
long double cosl(long double x)
{
union IEEEl2bits z;
-
int e0
;
+
unsigned n
;
long double y[2];
long double hi, lo;
z.e = x;
z.bits.sign = 0;
long double y[2];
long double hi, lo;
z.e = x;
z.bits.sign = 0;
- /* If x = +-0 or x is a subnormal number, then cos(x) = 1 */
- if (z.bits.exp == 0)
- return 1.0;
-
/* If x = NaN or Inf, then cos(x) = NaN. */
/* If x = NaN or Inf, then cos(x) = NaN. */
- if (z.bits.exp ==
32767
)
+ if (z.bits.exp ==
0x7fff
)
return (x - x) / (x - x);
return (x - x) / (x - x);
- /* Optimize the case where x is already within range. */
- if (z.e < M_PI_4)
+ /* |x| < (double)pi/4 */
+ if (z.e < M_PI_4) {
+ /* |x| < 0x1p-64 */
+ if (z.bits.exp < 0x3fff - 64)
+ /* raise inexact if x!=0 */
+ return 1.0 + x;
return __cosl(z.e, 0);
return __cosl(z.e, 0);
+ }
-
e0
= __rem_pio2l(x, y);
+
n
= __rem_pio2l(x, y);
hi = y[0];
lo = y[1];
hi = y[0];
lo = y[1];
-
- switch (e0 & 3) {
+ switch (n & 3) {
case 0:
hi = __cosl(hi, lo);
break;
case 0:
hi = __cosl(hi, lo);
break;