Benchmark (strfind vs. loop)

#define START_BENCH(%0); {new __a=%0,__b=0,__c,__d=GetTickCount(),__e=1;do{}\
    while(__d==GetTickCount());__c=GetTickCount();__d=__c;while(__c-__d<__a||\
    __e){if(__e){if(__c-__d>=__a){__e=0;__c=GetTickCount();do{}while(__c==\
    GetTickCount());__c=GetTickCount();__d=__c;__b=0;}}{

#define FINISH_BENCH(%0); }__b++;__c=GetTickCount();}printf(" Bench for "\
    %0": executes, by average, %.2f times/ms.",floatdiv(__b,__a));}

stock strreplacechar_1(string[], oldchar, newchar)
{
    new matches;
    if(ispacked(string)) {
        if(newchar == '\0') {
            for(new i; string{i} != '\0'; i++) {
                if(string{i} == oldchar) {
                    strdel(string, i, i + 1);
                    matches++;
                }
            }
        } else {
            for(new i; string{i} != '\0'; i++) {
                if(string{i} == oldchar) {
                    string{i} = newchar;
                    matches++;
                }
            }
        }
    } else {
        if(newchar == '\0') {
            for(new i; string[i] != '\0'; i++) {
                if(string[i] == oldchar) {
                    strdel(string, i, i + 1);
                    matches++;
                }
            }
        } else {
            for(new i; string[i] != '\0'; i++) {
                if(string[i] == oldchar) {
                    string[i] = newchar;
                    matches++;
                }
            }
        }
    }
    return matches;
}

stock strreplacechar_2(szString[], iOldChar, iNewChar, bool:bIgnoreCase = false) {
        new
                     szSearchString[2],
                bool:bIsPacked = ispacked(szString),
                     iPos = 0,
                     iMatches = 0
        ;

        szSearchString[0] = iOldChar;

        while (-1 != (iPos = strfind(szString, szSearchString, bIgnoreCase, iPos))) {
                if (bIsPacked)
                        szString{iPos++} = iNewChar;
                else
                        szString[iPos++] = iNewChar;

                iMatches++;
        }

        return iMatches;
}

public OnFilterScriptInit() {
    START_BENCH(1000);

    new
        szString[] = "oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo"
    ;
    strreplacechar_1(szString, 'o', '0');

    FINISH_BENCH("strreplacechar_1");

    START_BENCH(1000);

    new
        szString[] = "oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo"
    ;
    strreplacechar_2(szString, 'o', '0');

    FINISH_BENCH("strreplacechar_2");
}