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* util.c (ruby_strtod): 0.0000000000000000001 == 0.0 should be false.

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[ruby-talk:99318] [ruby-dev:23465]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6261 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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ocean 2004-05-07 02:26:19 +00:00
parent 175f3b2d7a
commit c4216a26e2
2 changed files with 26 additions and 27 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Fri May 7 11:17:27 Hirokazu Yamamoto <ocean@m2.ccsnet.ne.jp>
* util.c (ruby_strtod): 0.0000000000000000001 == 0.0 should be false.
[ruby-talk:99318] [ruby-dev:23465]
Thu May 6 22:27:32 2004 Masatoshi SEKI <m_seki@mva.biglobe.ne.jp>
* ext/socket/socket.c (ippaddr): use NUMERICHOST if can not resolve

48
util.c
View file

@ -744,9 +744,10 @@ ruby_strtod(string, endPtr)
* unnecessary overflow on I alone). In this
* case, fracExp is incremented one for each
* dropped digit. */
int mantSize; /* Number of digits in mantissa. */
int decPt; /* Number of mantissa digits BEFORE decimal
* point. */
int mantSize = 0; /* Number of digits in mantissa. */
int decPt = FALSE; /* mantissa has decimal point. */
const char *pMant; /* Temporarily holds location of mantissa
* in string. */
const char *pExp; /* Temporarily holds location of exponent
* in string. */
@ -770,28 +771,30 @@ ruby_strtod(string, endPtr)
sign = FALSE;
}
/* skip preceding zeros */
if (*p == '0') {
while (*p == '0')
p++;
p--;
}
/*
* Count the number of digits in the mantissa (including the decimal
* point), and also locate the decimal point.
*/
decPt = -1;
for (mantSize = 0; ; mantSize += 1) {
c = *p;
for ( ; c = *p; p += 1) {
if (!ISDIGIT(c)) {
if ((c != '.') || (decPt >= 0)) {
if (c != '.' || decPt) {
break;
}
decPt = mantSize;
decPt = TRUE;
}
else {
if (decPt) { /* already in fractional part */
fracExp -= 1;
}
if (mantSize) { /* already in mantissa */
mantSize += 1;
}
else if (c != '0') { /* have entered mantissa */
mantSize += 1;
pMant = p;
}
}
p += 1;
}
/*
@ -802,20 +805,11 @@ ruby_strtod(string, endPtr)
*/
pExp = p;
p -= mantSize;
if (decPt < 0) {
decPt = mantSize;
}
else {
mantSize -= 1; /* One of the digits was the point. */
}
p = pMant; /* valid if mantSize > 0 */
if (mantSize > 18) {
fracExp = decPt - 18;
fracExp += (mantSize - 18);
mantSize = 18;
}
else {
fracExp = decPt - mantSize;
}
if (mantSize == 0) {
fraction = 0.0;
p = string;