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* bignum.c (calc_hbase): Extracted from rb_big2str0.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41005 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2013-05-31 14:57:03 +00:00
parent fc1f9d2cb2
commit 2a38d9043e
2 changed files with 22 additions and 6 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Fri May 31 23:56:13 2013 Tanaka Akira <akr@fsij.org>
* bignum.c (calc_hbase): Extracted from rb_big2str0.
Fri May 31 23:22:24 2013 Tanaka Akira <akr@fsij.org>
* bignum.c: Don't hard code SIZEOF_BDIGITS for log_base(hbase).

24
bignum.c
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@ -1119,6 +1119,23 @@ big2str_karatsuba(VALUE x, int base, char* ptr,
return lh + ll;
}
static void
calc_hbase(int base, long *hbase_p, int *hbase_numdigits_p)
{
long hbase;
int hbase_numdigits;
hbase = base*base;
hbase_numdigits = 2;
#if SIZEOF_BDIGITS > 2
hbase *= hbase;
hbase_numdigits *= 2;
#endif
*hbase_p = hbase;
*hbase_numdigits_p = hbase_numdigits;
}
VALUE
rb_big2str0(VALUE x, int base, int trim)
{
@ -1144,12 +1161,7 @@ rb_big2str0(VALUE x, int base, int trim)
ptr = RSTRING_PTR(ss);
ptr[0] = RBIGNUM_SIGN(x) ? '+' : '-';
hbase = base*base;
hbase_numdigits = 2;
#if SIZEOF_BDIGITS > 2
hbase *= hbase;
hbase_numdigits *= 2;
#endif
calc_hbase(base, &hbase, &hbase_numdigits);
off = !(trim && RBIGNUM_SIGN(x)); /* erase plus sign if trim */
xx = rb_big_clone(x);
RBIGNUM_SET_SIGN(xx, 1);