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); |
+ } |
} |