int qore_number_private::roundUp(QoreString& str, qore_offset_t pos) {
for (; pos >= 0; --pos) {
char c = str[pos];
if (c == '.')
continue;
if (!pos && c == '-')
break;
if (c < '9') {
str.replaceChar(pos, c + 1);
break;
}
str.replaceChar(pos, '0');
}
if (pos == -1 || (!pos && str[0] == '-')) {
str.insertch('1', pos + 1, 1);
return 1;
}
return 0;
}
void qore_number_private::getAsString(QoreString& str, bool round) const {
// first check for zero
if (zero()) {
str.concat("0");
return;
}
mpfr_exp_t exp;
char* buf = mpfr_get_str(0, &exp, 10, 0, num, QORE_MPFR_RND);
if (!buf) {
numError(str);
return;
}
ON_BLOCK_EXIT(mpfr_free_str, buf);
//printd(5, "qore_number_private::getAsString(round: %d) this: %p buf: '%s'\n", round, this, buf);
// if it's a regular number, then format accordingly
if (number()) {
int sgn = sign();
qore_size_t len = str.size() + (sgn < 0 ? 1 : 0);
//printd(5, "qore_number_private::getAsString() this: %p '%s' exp "QLLD" len: "QLLD"\n", this, buf, exp, len);
qore_size_t dp = 0;
str.concat(buf);
// trim the trailing zeros off the end
str.trim_trailing('0');
if (exp <= 0) {
exp = -exp;
str.insert("0.", len);
dp = len + 1;
//printd(5, "qore_number_private::getAsString() this: %p str: '%s' exp: "QLLD" dp: "QLLD" len: "QLLD"\n", this, str.getBuffer(), exp, dp, len);
if (exp)
str.insertch('0', len + 2, exp);
}
else {
// get remaining length of string (how many characters were added)
qore_size_t rlen = str.size() - len;
//printd(5, "qore_number_private::getAsString() this: %p str: '%s' exp: "QLLD" rlen: "QLLD"\n", this, str.getBuffer(), exp, rlen);
// assert that we have added at least 1 character
assert(rlen > 0);
if ((qore_size_t)exp > rlen)
str.insertch('0', str.size(), exp - rlen);
else if ((qore_size_t)exp < rlen) {
str.insertch('.', len + exp, 1);
dp = len + exp;
}
}
// try to do some rounding (noise reduction with binary->decimal conversions)
if (dp && round)
applyRoundingHeuristic(str, dp, str.size());
}
else
str.concat(buf);
//printd(5, "qore_number_private::getAsString() this: %p returning '%s'\n", this, str.getBuffer());
}