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);
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:
/* 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;
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)
{
{
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 --------------------*/
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----------------------------*/
{
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) */
{ /* 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)
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 */
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;
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;
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);
}
/***************************************************************************/
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;
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);
}
/***************************************************************************/