lib/cumulative_product.c


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// Cumulative Product
//
// cumulative_product - cumprod
//
// y[i] = x[0] * x[1] * ... * x[i]
//
// Inputs:    1
// Outputs:   1
// Constants: 0

#include <math.h>
#include "ts.h"


ts_parameter_t const ts_cumulative_product_p = { .n_inputs = 1, .n_outputs = 1, .n_constants = 0, .params_size = 0 };

uint_t ts_cumulative_product_offset( ts_constant_t const *c )
{
	( void )c;
	return ( 0 );
}

int ts_cumulative_product(
	fp_t * const *y, uint_t y_n,
	fp_t const * const *x, uint_t x_n,
	uint_t n, ts_constant_t const *c
)
{
	TS_PROLOGUE( ts_cumulative_product_p );
	(void)c;
	for( uint_t i = 0; i < n; ++i )
	{
		if( i == 0 )
			y[0][i] = x[0][i];
		else
			y[0][i] = y[0][i - 1] * x[0][i];
	}
	return 0;
}