Overview

Calculates the magnitude of the complexVector and stores the results in the magnitudeVector. The results are scaled and converted into 16-bit shorts.

Dispatcher Prototype

void volk_32fc_s32f_magnitude_16i(int16_t* magnitudeVector, const lv_32fc_t*
complexVector, unsigned int num_points) 

Inputs

• complexVector: The complex input vector.
• num_points: The number of samples.

Outputs

• magnitudeVector: The output value as 16-bit shorts.

Example Generate points around the unit circle and map them to integers with magnitude 50 to preserve smallest deltas.

int N = 10;
unsigned int alignment = volk_get_alignment();
lv_32fc_t* in  = (lv_32fc_t*)volk_malloc(sizeof(lv_32fc_t)*N, alignment);
int16_t* out = (int16_t*)volk_malloc(sizeof(int16_t)*N, alignment);
float scale = 50.f;
 
for(unsigned int ii = 0; ii < N/2; ++ii){
    // Generate points around the unit circle
    float real = -4.f * ((float)ii / (float)N) + 1.f;
    float imag = std::sqrt(1.f - real * real);
    in[ii] = lv_cmake(real, imag);
    in[ii+N/2] = lv_cmake(-real, -imag);
}
 
volk_32fc_s32f_magnitude_16i(out, in, scale, N);
 
for(unsigned int ii = 0; ii < N; ++ii){
    printf("out[%u] = %i\n", ii, out[ii]);
}
 
volk_free(in);
volk_free(out);