p_acos.c

#include <pal.h>

/**
 *
 * Computes the inverse cosine (arc cosine) of the input vector 'a'. Input
 * values to acos must be in the range -1 to 1. The result values are in the
 * range 0 to pi. The function does not check for illegal input values.
 *
 * @param a     Pointer to input vector
 *
 * @param c     Pointer to output vector
 *
 * @param n     Size of 'a' and 'c' vector.
 *
 * @return      None
 *
 */
#include <math.h>
void p_acos_f32(const float *a, float *c, int n)
{

    int i;
    for (i = 0; i < n; i++) {
        *(c + i) = acosf(*(a + i));
    }
}