count

The C++ interface for count. More...

unsigned	count (const array &input)
	Count nonzero elements in input. More...

Detailed Description

The C++ interface for count.

Returns the number of the non-zero values in an set of elements

Function Documentation

unsigned af::count

(

const array &

input

)

Count nonzero elements in input.

float ha[] = { 0, 1, 0, 3, -3, 0.2, 0 };
array a(7,ha);
unsigned nnz = count(a);
printf("nonzero: %d\n", nnz); // 'nonzero: 4'

Parameters

[in]

input

Returns

The number of nonzero elements in input

Examples:

examples/benchmarks/pi.cpp, examples/machine_learning/kmeans.cpp, and examples/machine_learning/neuralnetwork.cpp.