svml128_atan_f?

Compute the arc tangent of the input vector.

Interface Definition

C interface:

float32x4_t svml128_atan_f32(float32x4_t src);

float64x2_t svml128_atan_f64(float64x2_t src);

Parameter

Parameter	Type	Description	Input/Output
src	For svml128_atan_f32, src is of single-precision floating-point type. For svml128_atan_f64, src is of double-precision floating-point type.	Floating-point value of the input vector	Input

Return Value

The unique angle whose tangent value is x at (–π/2, π/2) is returned. The value range is (–π/2, +π/2).
If the input is +0, the return value is +0.
If the input is -0, the return value is -0.
If the input is +∞, the return value is +π/2.
If the input is -∞, the return value is -π/2.
If the input is NaN, the return value is NaN.

Dependencies

C: "ksvml.h"

Examples

C interface:

    float32x4_t src = {0.0f, 2.0f, INFINITY, NAN};
    float32x4_t dst = svml128_atan_f32(src);
    printf("%.15g  %.15g  %.15g  %.15g\n", dst[0], dst[1], dst[2], dst[3]); 
    /**
     *  Output dst:
     *     0  1.10714871779409  1.5707963267949  -nan
     *
     */

Parent topic: Function Syntax