9 Curvas ParamĂŠtricas ); // paso 4... tmp [ L ][0] = 1; tmp [ MIU ][0] = 0; tmp [ Z ][0] = 0;
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// paso 5... for ( i =1; i < n ; i ++) { tmp [ L ][ i ] = 2 * ( tr -> x [ i +1] - tr - > x [i -1]) - tmp [ H ][ i -1]* tmp [ MIU ][ i -1]; tmp [ MIU ][ i ] = tmp [ H ][ i ] / tmp [ L ][ i ]; tmp [ Z ][ i ] = ( tmp [ ALFA ][ i] - tmp [ H ][ i -1]* tmp [ Z ][ i -1]) / tmp [L ][ i ]; } // paso 6... tr - > c [ n ] = 0;
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// paso 7... for ( i =n -1; i >=0; i - -) { tr - > c [ i ] = tmp [ Z ][ i ] - tmp [ MIU ][ i ] * tr - > c[ i +1]; tr - > b [ i ] = ( tr - > a [ i +1] - tr - > a [ i ]) / tmp [ H ][ i ] - tmp [ H ][ i ] * (tr - > c [ i +1] + 2* tr -> c [ i ]) / 3; tr - > d [ i ] = ( tr - > c [ i +1] - tr - > c [ i ]) / (3* tmp [ H ][ i ]) ; }
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// Liberar memoria temporal free ( tmp [0]) ;
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}
return TIC_COD_EXITO ;
int TIC_calcular ( trazadores * tr , double x , double * y ) {
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if ( tr == NULL || y == NULL ) { fprintf ( stderr , TIC_MSG_ERROR_PARAMETROS ) ; return TIC_COD_ERROR_PARAMETROS ; }
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if ( x >= tr - > x [0]) { /* int j =0;
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while ( j < tr - > num_trazadores && x > tr - > x [j +1]) j ++; if ( j < tr - > num_trazadores ) { double tmpX = x - tr - > x [ j ]; * y = tr - > a [ j ] + tmpX * ( tr - > b [ j ] + tmpX * ( tr - > c[ j ] + tmpX * tr - > d [ j ] ) ) ; return TIC_COD_EXITO ; } */
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