diff options
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_sin.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_sin.c b/sysdeps/ieee754/dbl-64/s_sin.c index 8764c58a9c..76cf99619a 100644 --- a/sysdeps/ieee754/dbl-64/s_sin.c +++ b/sysdeps/ieee754/dbl-64/s_sin.c @@ -132,8 +132,8 @@ double __mpcos (double x, double dx, bool reduce_range); static double slow (double x); static double slow1 (double x); static double slow2 (double x); -static double sloww (double x, double dx, double orig, int n); -static double sloww1 (double x, double dx, double orig, int n); +static double sloww (double x, double dx, double orig, bool shift_quadrant); +static double sloww1 (double x, double dx, double orig, bool shift_quadrant); static double sloww2 (double x, double dx, double orig, int n); static double bsloww (double x, double dx, double orig, int n); static double bsloww1 (double x, double dx, double orig, int n); @@ -319,12 +319,12 @@ reduce_sincos_1 (double x, double *a, double *da) clockwise. */ static double __always_inline -do_sincos_1 (double a, double da, double x, int4 n, int4 k) +do_sincos_1 (double a, double da, double x, int4 n, bool shift_quadrant) { double xx, retval, res, cor; double eps = fabs (x) * 1.2e-30; - int k1 = (n + k) & 3; + int k1 = (n + shift_quadrant) & 3; switch (k1) { /* quarter of unit circle */ case 2: @@ -338,14 +338,14 @@ do_sincos_1 (double a, double da, double x, int4 n, int4 k) /* Taylor series. */ res = TAYLOR_SIN (xx, a, da, cor); cor = 1.02 * cor + __copysign (eps, cor); - retval = (res == res + cor) ? res : sloww (a, da, x, k); + retval = (res == res + cor) ? res : sloww (a, da, x, shift_quadrant); } else { res = do_sin (a, da, &cor); cor = 1.035 * cor + __copysign (eps, cor); retval = ((res == res + cor) ? __copysign (res, a) - : sloww1 (a, da, x, k)); + : sloww1 (a, da, x, shift_quadrant)); } break; @@ -391,13 +391,13 @@ reduce_sincos_2 (double x, double *a, double *da) clockwise. */ static double __always_inline -do_sincos_2 (double a, double da, double x, int4 n, int4 k) +do_sincos_2 (double a, double da, double x, int4 n, bool shift_quadrant) { double res, retval, cor, xx; double eps = 1.0e-24; - k = (n + k) & 3; + int4 k = (n + shift_quadrant) & 3; switch (k) { @@ -498,7 +498,7 @@ __sin (double x) { double a, da; int4 n = reduce_sincos_1 (x, &a, &da); - retval = do_sincos_1 (a, da, x, n, 0); + retval = do_sincos_1 (a, da, x, n, false); } /* else if (k < 0x419921FB ) */ /*---------------------105414350 <|x|< 281474976710656 --------------------*/ @@ -507,7 +507,7 @@ __sin (double x) double a, da; int4 n = reduce_sincos_2 (x, &a, &da); - retval = do_sincos_2 (a, da, x, n, 0); + retval = do_sincos_2 (a, da, x, n, false); } /* else if (k < 0x42F00000 ) */ /* -----------------281474976710656 <|x| <2^1024----------------------------*/ @@ -574,14 +574,14 @@ __cos (double x) { res = TAYLOR_SIN (xx, a, da, cor); cor = 1.02 * cor + __copysign (1.0e-31, cor); - retval = (res == res + cor) ? res : sloww (a, da, x, 1); + retval = (res == res + cor) ? res : sloww (a, da, x, true); } else { res = do_sin (a, da, &cor); cor = 1.035 * cor + __copysign (1.0e-31, cor); retval = ((res == res + cor) ? __copysign (res, a) - : sloww1 (a, da, x, 1)); + : sloww1 (a, da, x, true)); } } /* else if (k < 0x400368fd) */ @@ -592,7 +592,7 @@ __cos (double x) { /* 2.426265<|x|< 105414350 */ double a, da; int4 n = reduce_sincos_1 (x, &a, &da); - retval = do_sincos_1 (a, da, x, n, 1); + retval = do_sincos_1 (a, da, x, n, true); } /* else if (k < 0x419921FB ) */ else if (k < 0x42F00000) @@ -600,7 +600,7 @@ __cos (double x) double a, da; int4 n = reduce_sincos_2 (x, &a, &da); - retval = do_sincos_2 (a, da, x, n, 1); + retval = do_sincos_2 (a, da, x, n, true); } /* else if (k < 0x42F00000 ) */ /* 281474976710656 <|x| <2^1024 */ @@ -696,7 +696,7 @@ slow2 (double x) static inline double __always_inline -sloww (double x, double dx, double orig, int k) +sloww (double x, double dx, double orig, bool shift_quadrant) { double y, t, res, cor, w[2], a, da, xn; mynumber v; @@ -723,7 +723,7 @@ sloww (double x, double dx, double orig, int k) xn = t - toint; v.x = t; y = (orig - xn * mp1) - xn * mp2; - n = (v.i[LOW_HALF] + k) & 3; + n = (v.i[LOW_HALF] + shift_quadrant) & 3; da = xn * pp3; t = y - da; da = (y - t) - da; @@ -745,7 +745,7 @@ sloww (double x, double dx, double orig, int k) if (w[0] == w[0] + cor) return __copysign (w[0], a); - return k ? __mpcos (orig, 0, true) : __mpsin (orig, 0, true); + return shift_quadrant ? __mpcos (orig, 0, true) : __mpsin (orig, 0, true); } /***************************************************************************/ @@ -757,7 +757,7 @@ sloww (double x, double dx, double orig, int k) static inline double __always_inline -sloww1 (double x, double dx, double orig, int k) +sloww1 (double x, double dx, double orig, bool shift_quadrant) { double w[2], cor, res; @@ -775,7 +775,7 @@ sloww1 (double x, double dx, double orig, int k) if (w[0] == w[0] + cor) return __copysign (w[0], x); - return (k == 1) ? __mpcos (orig, 0, true) : __mpsin (orig, 0, true); + return shift_quadrant ? __mpcos (orig, 0, true) : __mpsin (orig, 0, true); } /***************************************************************************/ |