Overview

Converts a floating point number to a 32-bit integer after applying a scaling factor.

Dispatcher Prototype

void volk_32f_s32f_convert_32i(int32_t* outputVector, const float* inputVector, const
float scalar, unsigned int num_points) 

Inputs

• inputVector: the input vector of floats.
• scalar: The value multiplied against each point in the input buffer.
• num_points: The number of data points.

Outputs

• outputVector: The output vector.

Example Convert floats from [-1,1] to integers with a scale of 5 to maintain smallest delta

int N = 10;
 unsigned int alignment = volk_get_alignment();
 float* increasing = (float*)volk_malloc(sizeof(float)*N, alignment);
 int32_t* out = (int32_t*)volk_malloc(sizeof(int32_t)*N, alignment);
 
 for(unsigned int ii = 0; ii < N; ++ii){
     increasing[ii] = 2.f * ((float)ii / (float)N) - 1.f;
 }
 
 // Normalize by the smallest delta (0.2 in this example)
 float scale = 5.f;
 
 volk_32f_s32f_convert_32i(out, increasing, scale, N);
 
 for(unsigned int ii = 0; ii < N; ++ii){
     printf("out[%u] = %i\n", ii, out[ii]);
 }
 
 volk_free(increasing);
 volk_free(out);