Vector Optimized Library of Kernels  1.2.2
Architecture-tuned implementations of math kernels
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Overview

Multiplies two input floating point vectors together.

c[i] = a[i] * b[i]

Dispatcher Prototype

void volk_32f_x2_multiply_32f(float* cVector, const float* aVector, const float* bVector, unsigned int num_points)

Inputs

  • aVector: First input vector.
  • bVector: Second input vector.
  • num_points: The number of values in both input vectors.

Outputs

  • cVector: The output vector.

Example Multiply elements of an increasing vector by those of a decreasing vector.

int N = 10;
unsigned int alignment = volk_get_alignment();
float* increasing = (float*)volk_malloc(sizeof(float)*N, alignment);
float* decreasing = (float*)volk_malloc(sizeof(float)*N, alignment);
float* out = (float*)volk_malloc(sizeof(float)*N, alignment);
for(unsigned int ii = 0; ii < N; ++ii){
increasing[ii] = (float)ii;
decreasing[ii] = 10.f - (float)ii;
}
volk_32f_x2_multiply_32f(out, increasing, decreasing, N);
for(unsigned int ii = 0; ii < N; ++ii){
printf("out[%u] = %1.2f\n", ii, out[ii]);
}
volk_free(increasing);
volk_free(decreasing);
volk_free(out);