diff options
author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-12-05 00:09:58 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-12-05 00:09:58 +0000 |
commit | 02b7d4c5444fd64bde04b082672f61b880d77a70 (patch) | |
tree | f347a26081d50c64f312a8e778b75670ac8ab0f7 /bignum.c | |
parent | 984759ef98e7db295121d2cf19191acc6400891a (diff) |
bignum.c: unified int_pow_tmp2
* bignum.c (int_pow_tmp2): unified DLONG and none DLONG code.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61018 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'bignum.c')
-rw-r--r-- | bignum.c | 29 |
1 files changed, 10 insertions, 19 deletions
@@ -6992,40 +6992,31 @@ int_pow_tmp2(VALUE x, VALUE y, long mm, int nega_flg) long tmp = 1L; long yy; #ifdef DLONG - DLONG const mmm = mm; + const DLONG m = mm; + long tmp2 = tmp; long xx = FIX2LONG(x); # define MUL_MODULO(a, b, c) (long)(((DLONG)(a) * (DLONG)(b)) % (c)) - - for (/*NOP*/; ! FIXNUM_P(y); y = rb_funcall(y, idGTGT, 1, LONG2FIX(1L))) { - if (RTEST(rb_int_odd_p(y))) { - tmp = MUL_MODULO(tmp, xx, mmm); - } - xx = MUL_MODULO(xx, xx, mmm); - } - for (yy = FIX2LONG(y); yy; yy >>= 1L) { - if (yy & 1L) { - tmp = MUL_MODULO(tmp, xx, mmm); - } - xx = MUL_MODULO(xx, xx, mmm); - } #else - VALUE const m = LONG2FIX(mm); + const VALUE m = LONG2FIX(mm); VALUE tmp2 = LONG2FIX(tmp); + VALUE xx = x; # define MUL_MODULO(a, b, c) rb_int_modulo(rb_fix_mul_fix((a), (b)), (c)) +#endif for (/*NOP*/; ! FIXNUM_P(y); y = rb_funcall(y, idGTGT, 1, LONG2FIX(1L))) { if (RTEST(rb_int_odd_p(y))) { - tmp2 = MUL_MODULO(tmp2, x, m); + tmp2 = MUL_MODULO(tmp2, xx, m); } - x = MUL_MODULO(x, x, m); + xx = MUL_MODULO(xx, xx, m); } for (yy = FIX2LONG(y); yy; yy >>= 1L) { if (yy & 1L) { - tmp2 = MUL_MODULO(tmp2, x, m); + tmp2 = MUL_MODULO(tmp2, xx, m); } - x = MUL_MODULO(x, x, m); + xx = MUL_MODULO(xx, xx, m); } +#ifndef DLONG tmp = FIX2LONG(tmp2); #endif if (nega_flg && tmp) { |