| Index: fusl/src/math/sinf.c
|
| diff --git a/fusl/src/math/sinf.c b/fusl/src/math/sinf.c
|
| index 64e39f50177ca1f3330a6dffa687c7f78841b975..7893625c99ced90a2234b347b96a3e446868322c 100644
|
| --- a/fusl/src/math/sinf.c
|
| +++ b/fusl/src/math/sinf.c
|
| @@ -17,60 +17,61 @@
|
| #include "libm.h"
|
|
|
| /* Small multiples of pi/2 rounded to double precision. */
|
| -static const double
|
| -s1pio2 = 1*M_PI_2, /* 0x3FF921FB, 0x54442D18 */
|
| -s2pio2 = 2*M_PI_2, /* 0x400921FB, 0x54442D18 */
|
| -s3pio2 = 3*M_PI_2, /* 0x4012D97C, 0x7F3321D2 */
|
| -s4pio2 = 4*M_PI_2; /* 0x401921FB, 0x54442D18 */
|
| +static const double s1pio2 = 1 * M_PI_2, /* 0x3FF921FB, 0x54442D18 */
|
| + s2pio2 = 2 * M_PI_2, /* 0x400921FB, 0x54442D18 */
|
| + s3pio2 = 3 * M_PI_2, /* 0x4012D97C, 0x7F3321D2 */
|
| + s4pio2 = 4 * M_PI_2; /* 0x401921FB, 0x54442D18 */
|
|
|
| -float sinf(float x)
|
| -{
|
| - double y;
|
| - uint32_t ix;
|
| - int n, sign;
|
| +float sinf(float x) {
|
| + double y;
|
| + uint32_t ix;
|
| + int n, sign;
|
|
|
| - GET_FLOAT_WORD(ix, x);
|
| - sign = ix >> 31;
|
| - ix &= 0x7fffffff;
|
| + GET_FLOAT_WORD(ix, x);
|
| + sign = ix >> 31;
|
| + ix &= 0x7fffffff;
|
|
|
| - if (ix <= 0x3f490fda) { /* |x| ~<= pi/4 */
|
| - if (ix < 0x39800000) { /* |x| < 2**-12 */
|
| - /* raise inexact if x!=0 and underflow if subnormal */
|
| - FORCE_EVAL(ix < 0x00800000 ? x/0x1p120f : x+0x1p120f);
|
| - return x;
|
| - }
|
| - return __sindf(x);
|
| - }
|
| - if (ix <= 0x407b53d1) { /* |x| ~<= 5*pi/4 */
|
| - if (ix <= 0x4016cbe3) { /* |x| ~<= 3pi/4 */
|
| - if (sign)
|
| - return -__cosdf(x + s1pio2);
|
| - else
|
| - return __cosdf(x - s1pio2);
|
| - }
|
| - return __sindf(sign ? -(x + s2pio2) : -(x - s2pio2));
|
| - }
|
| - if (ix <= 0x40e231d5) { /* |x| ~<= 9*pi/4 */
|
| - if (ix <= 0x40afeddf) { /* |x| ~<= 7*pi/4 */
|
| - if (sign)
|
| - return __cosdf(x + s3pio2);
|
| - else
|
| - return -__cosdf(x - s3pio2);
|
| - }
|
| - return __sindf(sign ? x + s4pio2 : x - s4pio2);
|
| - }
|
| + if (ix <= 0x3f490fda) { /* |x| ~<= pi/4 */
|
| + if (ix < 0x39800000) { /* |x| < 2**-12 */
|
| + /* raise inexact if x!=0 and underflow if subnormal */
|
| + FORCE_EVAL(ix < 0x00800000 ? x / 0x1p120f : x + 0x1p120f);
|
| + return x;
|
| + }
|
| + return __sindf(x);
|
| + }
|
| + if (ix <= 0x407b53d1) { /* |x| ~<= 5*pi/4 */
|
| + if (ix <= 0x4016cbe3) { /* |x| ~<= 3pi/4 */
|
| + if (sign)
|
| + return -__cosdf(x + s1pio2);
|
| + else
|
| + return __cosdf(x - s1pio2);
|
| + }
|
| + return __sindf(sign ? -(x + s2pio2) : -(x - s2pio2));
|
| + }
|
| + if (ix <= 0x40e231d5) { /* |x| ~<= 9*pi/4 */
|
| + if (ix <= 0x40afeddf) { /* |x| ~<= 7*pi/4 */
|
| + if (sign)
|
| + return __cosdf(x + s3pio2);
|
| + else
|
| + return -__cosdf(x - s3pio2);
|
| + }
|
| + return __sindf(sign ? x + s4pio2 : x - s4pio2);
|
| + }
|
|
|
| - /* sin(Inf or NaN) is NaN */
|
| - if (ix >= 0x7f800000)
|
| - return x - x;
|
| + /* sin(Inf or NaN) is NaN */
|
| + if (ix >= 0x7f800000)
|
| + return x - x;
|
|
|
| - /* general argument reduction needed */
|
| - n = __rem_pio2f(x, &y);
|
| - switch (n&3) {
|
| - case 0: return __sindf(y);
|
| - case 1: return __cosdf(y);
|
| - case 2: return __sindf(-y);
|
| - default:
|
| - return -__cosdf(y);
|
| - }
|
| + /* general argument reduction needed */
|
| + n = __rem_pio2f(x, &y);
|
| + switch (n & 3) {
|
| + case 0:
|
| + return __sindf(y);
|
| + case 1:
|
| + return __cosdf(y);
|
| + case 2:
|
| + return __sindf(-y);
|
| + default:
|
| + return -__cosdf(y);
|
| + }
|
| }
|
|
|