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// Reversal
//
// reversal
//
// Reversal indicator
//
//
//
// Inputs: 1
// Outputs: 1
// Constants: 0
#include "ts.h"
ts_parameter_t const ts_reversal_p = { .n_inputs = 1, .n_outputs = 1, .n_constants = 0, .params_size = 0 };
uint_t ts_reversal_offset( ts_constant_t const *c )
{
( void )c;
return ( 2 );
}
int ts_reversal(
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_reversal_p );
(void)c;
if (n > 0) y[0][0] = 0;
if (n > 1) y[0][1] = 0;
for( uint_t i = 2; i < n; ++i )
{
if( x[0][i] < x[0][i - 1] && x[0][i - 1] > x[0][i - 2] )
{
y[0][i] = -1;
}
else if( x[0][i] > x[0][i - 1] && x[0][i - 1] < x[0][i - 2] )
{
y[0][i] = 1;
}
else
{
y[0][i] = 0;
}
}
return 0;
}
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