diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/s_sincosf.h')
-rw-r--r-- | sysdeps/ieee754/flt-32/s_sincosf.h | 71 |
1 files changed, 1 insertions, 70 deletions
diff --git a/sysdeps/ieee754/flt-32/s_sincosf.h b/sysdeps/ieee754/flt-32/s_sincosf.h index 1dcb04f235..54a9da543b 100644 --- a/sysdeps/ieee754/flt-32/s_sincosf.h +++ b/sysdeps/ieee754/flt-32/s_sincosf.h @@ -19,22 +19,13 @@ #include <stdint.h> #include <math.h> #include "math_config.h" +#include <sincosf_poly.h> /* 2PI * 2^-64. */ static const double pi63 = 0x1.921FB54442D18p-62; /* PI / 4. */ static const double pio4 = 0x1.921FB54442D18p-1; -/* The constants and polynomials for sine and cosine. */ -typedef struct -{ - double sign[4]; /* Sign of sine in quadrants 0..3. */ - double hpi_inv; /* 2 / PI ( * 2^24 if !TOINT_INTRINSICS). */ - double hpi; /* PI / 2. */ - double c0, c1, c2, c3, c4; /* Cosine polynomial. */ - double s1, s2, s3; /* Sine polynomial. */ -} sincos_t; - /* Polynomial data (the cosine polynomial is negated in the 2nd entry). */ extern const sincos_t __sincosf_table[2] attribute_hidden; @@ -48,66 +39,6 @@ abstop12 (float x) return (asuint (x) >> 20) & 0x7ff; } -/* Compute the sine and cosine of inputs X and X2 (X squared), using the - polynomial P and store the results in SINP and COSP. N is the quadrant, - if odd the cosine and sine polynomials are swapped. */ -static inline void -sincosf_poly (double x, double x2, const sincos_t *p, int n, float *sinp, - float *cosp) -{ - double x3, x4, x5, x6, s, c, c1, c2, s1; - - x4 = x2 * x2; - x3 = x2 * x; - c2 = p->c3 + x2 * p->c4; - s1 = p->s2 + x2 * p->s3; - - /* Swap sin/cos result based on quadrant. */ - float *tmp = (n & 1 ? cosp : sinp); - cosp = (n & 1 ? sinp : cosp); - sinp = tmp; - - c1 = p->c0 + x2 * p->c1; - x5 = x3 * x2; - x6 = x4 * x2; - - s = x + x3 * p->s1; - c = c1 + x4 * p->c2; - - *sinp = s + x5 * s1; - *cosp = c + x6 * c2; -} - -/* Return the sine of inputs X and X2 (X squared) using the polynomial P. - N is the quadrant, and if odd the cosine polynomial is used. */ -static inline float -sinf_poly (double x, double x2, const sincos_t *p, int n) -{ - double x3, x4, x6, x7, s, c, c1, c2, s1; - - if ((n & 1) == 0) - { - x3 = x * x2; - s1 = p->s2 + x2 * p->s3; - - x7 = x3 * x2; - s = x + x3 * p->s1; - - return s + x7 * s1; - } - else - { - x4 = x2 * x2; - c2 = p->c3 + x2 * p->c4; - c1 = p->c0 + x2 * p->c1; - - x6 = x4 * x2; - c = c1 + x4 * p->c2; - - return c + x6 * c2; - } -} - /* Fast range reduction using single multiply-subtract. Return the modulo of X as a value between -PI/4 and PI/4 and store the quadrant in NP. The values for PI/2 and 2/PI are accessed via P. Since PI/2 as a double |