Pallette rounding

void rgb2lab( double r, double g,  double b, double* rr, double* gg, double* bb )
{
    if( r > (( double ) 0.04045 ) ){
        r = pow(( r + (( double ) 0.055 ) / ( double ) 1.055 ), ( double ) 2.4 );
    } else{
        r /= ( double ) 12.92;
    }
    if( g > ( double ) 0.04045 ){
        g = pow(( g + (( double ) 0.055 ) / ( double ) 1.055 ), ( double ) 2.4 );
    } else{
        g /= ( double ) 12.92;
    }
    if( b > ( double ) 0.04045 ){
        b = pow(( b + (( double ) 0.055 ) / ( double ) 1.055 ), ( double ) 2.4 );
    } else{
        b /= ( double ) 12.92;
    }
    r = r * 100;
    g = g * 100;
    b = b * 100;
    double rrr = ( r * ( double ) 0.4124 + g * ( double ) 0.3576 + b * ( double ) 0.1805 ) / (( double ) 95.047 );
    double ggg = ( r * ( double ) 0.2126 + g * ( double ) 0.7152 + b * ( double ) 0.0722 ) / (( double ) 100 );
    double bbb = ( r * ( double ) 0.0193 + g * ( double ) 0.1192 + b * ( double ) 0.9505 ) / (( double ) 108.883 );
    if( rrr > ( double ) 0.008856 ){
        rrr = pow( rrr , ( double ) .333333333333 );
    } else{
        rrr = (( double ) 7.787 * rrr ) + ((( double ) 16 ) / (( double ) 116 ) );
    }
    if( ggg > ( double ) 0.008856 ){
        ggg = pow( ggg , ( double ) .333333333333 );
    } else{
        ggg = (( double ) 7.787 * ggg ) + ((( double ) 16 ) / (( double ) 116 ) );
    }
    if( bbb > ( double ) 0.008856 ){
        bbb = pow( bbb , ( double ) .333333333333 );
    } else {
        bbb = (( double ) 7.787 * bbb ) + ((( double ) 16 ) / (( double ) 116 ) );
    }
    *rr = (( double ) 116 * ggg ) - ( double ) 16;
    *gg = ( double ) 500 * ( rrr - ggg );
    *bb = ( double ) 200 * ( ggg - bbb );
}


unsigned long int getCloseCol( unsigned long int inCol )
{
    int tttt = 0;
    double r = ( inCol >> 24 ) & 0xFF;
    double g = ( inCol >> 16 ) & 0xFF;
    double b = ( inCol >> 8 ) & 0xFF;
    double rl, gl, bl;
    rgb2lab( r, g, b, &rl, &gl, &bl );
    unsigned long int cout = inCol;
    int bout = 0;
    double cnum = pow( 255, 255 ) + pow( 255, 255 ) + pow( 255, 255 );
    unsigned long int tmp = 0xFFFFFFFF;
    for( int i = 0; cats[i] != 0; i ++ ){
        if( cats[i]->blockCount > 0 && cats[i]->enabled == true ){
            for( int j = 0; j < cats[i]->blockCount; j += 1 ){
                tttt += 1;
                BLOCKTYPE* ttt = blockLookup( cats[i]->blocks[j] );
                double tmp = sqr( ttt->labR - rl ) + sqr( ttt->labG - gl ) + sqr( ttt->labB - bl );
                if( abss( tmp ) < cnum ){
                    cnum = abss( tmp );
                    bout = cats[i]->blocks[j];
                    cout = ttt->color;
                }

            }
        }
    }
    if( tttt == 0 ){
        bout = 0;
    }
    if( cout == 0 )
        return 0;
    return bout;
}