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volk_32f_atan_32f

Overview

Computes arctan of input vector and stores results in output vector.

Dispatcher Prototype

void volk_32f_atan_32f(float* out, const float* in, unsigned int num_points)

Inputs

- in_ptr: The input vector of floats.
- num_points: The number of data points.

Outputs

- out_ptr: The vector where results will be stored.

Example Calculate common angles around the top half of the unit circle.

int N = 10;
unsigned int alignment = volk_get_alignment();
float* in = (float*)volk_malloc(sizeof(float)*N, alignment);
float* out = (float*)volk_malloc(sizeof(float)*N, alignment);
in[0] = 0.f;
in[1] = 1.f/std::sqrt(3.f);
in[2] = 1.f;
in[3] = std::sqrt(3.f);
in[4] = in[5] = 1e99;
for(unsigned int ii = 6; ii < N; ++ii){
in[ii] = - in[N-ii-1];
}
volk_32f_atan_32f(out, in, N);
for(unsigned int ii = 0; ii < N; ++ii){
printf("atan(%1.3f) = %1.3f\n", in[ii], out[ii]);
}
volk_free(in);
volk_free(out);