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* bignum.c (big2ulong): Add a cast.

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(big2ull): Add a specialized code for SIZEOF_LONG_LONG <=
  SIZEOF_BDIGITS.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41618 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2013-06-25 10:04:37 +00:00
parent 6dede51159
commit a8c226922d
2 changed files with 15 additions and 4 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Tue Jun 25 19:03:00 2013 Tanaka Akira <akr@fsij.org>
* bignum.c (big2ulong): Add a cast.
(big2ull): Add a specialized code for SIZEOF_LONG_LONG <=
SIZEOF_BDIGITS.
Tue Jun 25 12:42:57 2013 Tanaka Akira <akr@fsij.org> Tue Jun 25 12:42:57 2013 Tanaka Akira <akr@fsij.org>
* bignum.c (integer_unpack_single_bdigit): Use "1 + ~u" instead of * bignum.c (integer_unpack_single_bdigit): Use "1 + ~u" instead of

13
bignum.c
View File

@ -2423,7 +2423,7 @@ big2ulong(VALUE x, const char *type, int check)
} }
ds = BDIGITS(x); ds = BDIGITS(x);
#if SIZEOF_LONG <= SIZEOF_BDIGITS #if SIZEOF_LONG <= SIZEOF_BDIGITS
num = ds[0]; num = (unsigned long)ds[0];
#else #else
num = 0; num = 0;
while (len--) { while (len--) {
@ -2486,16 +2486,21 @@ big2ull(VALUE x, const char *type)
{ {
long len = RBIGNUM_LEN(x); long len = RBIGNUM_LEN(x);
unsigned LONG_LONG num; unsigned LONG_LONG num;
BDIGIT *ds; BDIGIT *ds = BDIGITS(x);
if (len > SIZEOF_LONG_LONG/SIZEOF_BDIGITS) if (len == 0)
return 0;
if (BIGSIZE(x) > SIZEOF_LONG_LONG)
rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type); rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
ds = BDIGITS(x); #if SIZEOF_LONG_LONG <= SIZEOF_BDIGITS
num = (unsigned LONG_LONG)ds[0];
#else
num = 0; num = 0;
while (len--) { while (len--) {
num = BIGUP(num); num = BIGUP(num);
num += ds[len]; num += ds[len];
} }
#endif
return num; return num;
} }