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[opencv] / apps / cvenv / EiC / stdClib / strround.c

int strround(char *s,int len)
{
    /* string rounding function
     * (c) Edmond J. Breen.
     * round back the numbers in a string
     * and fill with zeros.
     * where: 'len' is the length of the string.
     * Returns 1 on success
     * and 0 if over flow has occurred.
     */
    if(len>0)
        if(s[--len] >= '5') {
            do {
                s[len--] = '0';
            } while(len > 0 && s[len] == '9');
            if(s[len] == '9')
                return 0;
            s[len]++;
        }
    return 1;
}