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

bool ts_test_on_balance_volume_rate( void )
{
    uint_t k = TS_TEST_K;

    fp_t const o[] = { 10, 11, 12, 11, 12, 10, 11, 13, 12, 14 };
    fp_t const h[] = { 12, 13, 14, 12, 14, 11, 12, 15, 14, 16 };
    fp_t const l[] = { 8,  9,  10,  9,  10,  9,  10,  11,  10,  12 };
    fp_t const c[] = { 11, 12, 10, 11, 11, 10, 12, 14, 13, 15 };
    fp_t const v[] = { 100, 200, 300, 400, 500, 300, 200, 400, 300, 500 };

    fp_t const * const x[] = { o, h, l, c, v };

    fp_t obv_buf[10] = { 0 };
    fp_t obv = 0;

    for( uint_t i = 1; i < 10; ++i )
    {
        if( c[i] > c[i-1] )
        {
            obv += v[i];
        }
        else if( c[i] < c[i-1] )
        {
            obv -= v[i];
        }
        obv_buf[i] = obv;
    }

    fp_t e[4] = { 0 };

    for( uint_t i = k + 1; i < 10; ++i )
    {
        fp_t obv_prev = obv_buf[i - k];
        e[i - (k + 1)] = obv_prev != 0 ? ( obv_buf[i] - obv_prev ) / obv_prev * 100 : 0;
    }

    fp_t const * const e_arr[1] = { e };

    fp_t c_val = k;

    return ts_test(ts_on_balance_volume_rate, ts_on_balance_volume_rate_offset, x, e_arr, 10, (ts_constant_t *)&c_val, &ts_on_balance_volume_rate_p);
}