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Fixed amb1163: float printing broke on large values.

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This commit is contained in:
David Anderson 2008-08-16 04:56:50 +00:00
parent 01f3d729de
commit 36db059672
1 changed files with 104 additions and 50 deletions
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162
amxmodx/format.cpp
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@ -160,71 +160,125 @@ void AddString(U **buf_p, size_t &maxlen, const cell *string, int width, int pre
}
template <typename U>
void AddFloat(U **buf_p, size_t &maxlen, double fval, int width, int prec)
void AddFloat(U **buf_p, size_t &maxlen, double fval, int width, int prec, int flags)
{
U text[32];
int digits;
double signedVal;
U *buf;
int val;
int digits; // non-fraction part digits
double tmp; // temporary
U *buf = *buf_p; // output buffer pointer
int val; // temporary
int sign = 0; // 0: positive, 1: negative
int fieldlength; // for padding
int significant_digits = 0; // number of significant digits written
const int MAX_SIGNIFICANT_DIGITS = 16;
// default precision
if (prec < 0)
{
prec = 6;
}
// get the sign
signedVal = fval;
if (fval < 0)
fval = -fval;
// write the float number
digits = 0;
val = (int)fval;
do {
text[digits++] = '0' + val % 10;
val /= 10;
} while (val);
if (signedVal < 0)
text[digits++] = '-';
buf = *buf_p;
while (digits < width && maxlen)
{
fval = -fval;
sign = 1;
}
// compute whole-part digits count
digits = (int)log10(fval) + 1;
// Only print 0.something if 0 < fval < 1
if (digits < 1)
{
digits = 1;
}
// compute the field length
fieldlength = digits + prec + ((prec > 0) ? 1 : 0) + sign;
// minus sign BEFORE left padding if padding with zeros
if (sign && maxlen && (flags & ZEROPAD))
{
*buf++ = '-';
maxlen--;
}
// right justify if required
if ((flags & LADJUST) == 0)
{
while ((fieldlength < width) && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
width--;
maxlen--;
}
}
// minus sign AFTER left padding if padding with spaces
if (sign && maxlen && !(flags & ZEROPAD))
{
*buf++ = '-';
maxlen--;
}
// write the whole part
tmp = pow(10.0, digits-1);
while ((digits--) && maxlen)
{
if (++significant_digits > MAX_SIGNIFICANT_DIGITS)
{
*buf++ = '0';
}
else
{
val = (int)(fval / tmp);
*buf++ = '0' + val;
fval -= val * tmp;
tmp *= 0.1;
}
maxlen--;
}
// write the fraction part
if (maxlen)
{
*buf++ = '.';
maxlen--;
}
tmp = pow(10.0, prec);
fval *= tmp;
while (prec-- && maxlen)
{
if (++significant_digits > MAX_SIGNIFICANT_DIGITS)
{
*buf++ = '0';
}
else
{
tmp *= 0.1;
val = (int)(fval / tmp);
*buf++ = '0' + val;
fval -= val * tmp;
}
maxlen--;
}
// left justify if required
if (flags & LADJUST)
{
while ((fieldlength < width) && maxlen)
{
// right-padding only with spaces, ZEROPAD is ignored
*buf++ = ' ';
width--;
maxlen--;
}
while (digits-- && maxlen)
{
*buf++ = text[digits];
maxlen--;
}
// update parent's buffer pointer
*buf_p = buf;
if (prec < 0)
prec = 6;
// write the fraction
digits = 0;
while (digits < prec)
{
fval -= (int) fval;
fval *= 10.0;
val = (int) fval;
text[digits++] = '0' + val % 10;
}
if (digits > 0 && maxlen)
{
buf = *buf_p;
*buf++ = '.';
maxlen--;
for (prec = 0; maxlen && prec < digits; prec++)
{
*buf++ = text[prec];
maxlen--;
}
*buf_p = buf;
}
}
template <typename U>
@ -481,7 +535,7 @@ reswitch:
break;
case 'f':
CHECK_ARGS(0);
AddFloat(&buf_p, llen, amx_ctof(*get_amxaddr(amx, params[arg])), width, prec);
AddFloat(&buf_p, llen, amx_ctof(*get_amxaddr(amx, params[arg])), width, prec, flags);
arg++;
break;
case 'X':