diff options
Diffstat (limited to 'pl/math/tanf_3u3.c')
| -rw-r--r-- | pl/math/tanf_3u3.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/pl/math/tanf_3u3.c b/pl/math/tanf_3u3.c index 0b1617c..ec006dc 100644 --- a/pl/math/tanf_3u3.c +++ b/pl/math/tanf_3u3.c @@ -7,6 +7,7 @@ #include "math_config.h" #include "pl_sig.h" #include "pl_test.h" +#include "pairwise_hornerf.h" /* Useful constants. */ #define NegPio2_1 (-0x1.921fb6p+0f) @@ -21,28 +22,19 @@ /* 2PI * 2^-64. */ #define Pio2p63 (0x1.921FB54442D18p-62) -#define P __tanf_poly_data.poly_tan -#define Q __tanf_poly_data.poly_cotan +#define P(i) __tanf_poly_data.poly_tan[i] +#define Q(i) __tanf_poly_data.poly_cotan[i] static inline float eval_P (float z) { - float z2 = z * z; - float y_10 = fmaf (z, P[1], P[0]); - float y_32 = fmaf (z, P[3], P[2]); - float y_54 = fmaf (z, P[5], P[4]); - float y_6_54 = fmaf (z2, P[6], y_54); - float y_32_10 = fmaf (z2, y_32, y_10); - float y = fmaf (z2, z2 * y_6_54, y_32_10); - return y; + return PAIRWISE_HORNER_5 (z, z * z, P); } static inline float eval_Q (float z) { - float z2 = z * z; - float y = fmaf (z2, fmaf (z, Q[3], Q[2]), fmaf (z, Q[1], Q[0])); - return y; + return PAIRWISE_HORNER_3 (z, z * z, Q); } /* Reduction of the input argument x using Cody-Waite approach, such that x = r |