type-unsafe C version of std::fill, C (clang)

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#include <stdio.h>
#include <string.h>

void fill_array( void* array, size_t array_sz, size_t element_sz, const void* ptr_value )
{
    if( array != NULL && ptr_value != NULL )
    {
        char* bytes = array ;
        for( size_t i = 0 ; i < array_sz ; ++i )
            memcpy( bytes + i*element_sz, ptr_value, element_sz ) ;
    }
}

int main()
{
    {
        enum { N = 20 } ;
        int a[N] = { 0 } ;
        const int value = 22 ;
        
        fill_array( a, N, sizeof(int), &value ) ;
        for( int i = 0 ; i < N ; ++i ) printf( "%d ", a[i] ) ;
        puts("") ;
    }

{
        enum { N = 16 } ;
        double a[N] = { 0 } ;
        const double value = 9.99 ;
        
        fill_array( a, N, sizeof(double), &value ) ;
        for( int i = 0 ; i < N ; ++i ) printf( "%.2f ", a[i] ) ;
        puts("") ;
    }

{
        enum { N = 25 } ;
        char a[N] = { 0 } ;
        
        const char value = '#' ;
        // note: N-1 because we want to retain the erminating null character 
        fill_array( a, N-1, sizeof(char), &value ) ;  
        puts(a) ;
    }
}

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Compilation time: 0.22 sec, absolute running time: 0.14 sec, cpu time: 0 sec, memory peak: 3 Mb, absolute service time: 0,37 sec