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* numeric.c (fix2str): improve r54092 like rb_int2big().

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54098 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2016-03-14 04:41:16 +00:00
parent 9749511dfe
commit fcadcd3e68
2 changed files with 11 additions and 11 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Mon Mar 14 13:38:38 2016 NARUSE, Yui <naruse@ruby-lang.org>
* numeric.c (fix2str): improve r54092 like rb_int2big().
Mon Mar 14 10:02:23 2016 Eric Wong <e@80x24.org>
* ext/openssl/ossl_ssl.c (ossl_sslctx_setup): document as MT-unsafe

18
numeric.c
View file

@ -2896,6 +2896,7 @@ rb_fix2str(VALUE x, int base)
{
char buf[SIZEOF_VALUE*CHAR_BIT + 1], *const e = buf + sizeof buf, *b = e;
long val = FIX2LONG(x);
unsigned long u;
int neg = 0;
if (base < 2 || 36 < base) {
@ -2905,20 +2906,15 @@ rb_fix2str(VALUE x, int base)
return rb_usascii_str_new2("0");
}
if (val < 0) {
if (val == LONG_MIN) {
int last = ((int)((val = LONG_MAX) % base) + 1);
*--b = ruby_digitmap[last % base];
val /= base;
val += last == base; /* carry */
}
else {
val = -val;
}
u = 1 + (unsigned long)(-(val + 1)); /* u = -val avoiding overflow */
neg = 1;
}
else {
u = val;
}
do {
*--b = ruby_digitmap[(int)(val % base)];
} while (val /= base);
*--b = ruby_digitmap[(int)(u % base)];
} while (u /= base);
if (neg) {
*--b = '-';
}