pl/math/sv_atanf_2u9.c

2  * Single-precision vector atan(x) function.
18   /* Coefficients of polynomial P such that atan(x)~x+x*P(x^2) on
28    atan(x) ~ shift + z + z^3 * P(z^2) with reduction to [0,1] using
33 svfloat32_t SV_NAME_F1 (atan) (svfloat32_t x, const svbool_t pg)
67   /* y = atan(x) if x>0, -atan(-x) otherwise.  */
71 PL_SIG (SV, F, 1, atan, -3.1, 3.1)
72 PL_TEST_ULP (SV_NAME_F1 (atan), 2.9)
73 PL_TEST_INTERVAL (SV_NAME_F1 (atan), 0.0, 1.0, 40000)
74 PL_TEST_INTERVAL (SV_NAME_F1 (atan), 1.0, 100.0, 40000)
75 PL_TEST_INTERVAL (SV_NAME_F1 (atan), 100, inf, 40000)
76 PL_TEST_INTERVAL (SV_NAME_F1 (atan), -0, -inf, 40000)