big_lshift and big_rshift are merged.
(big_shift2): New function.
(big_lshift): Use big_shift3.
(big_rshift): Ditto.
(check_shiftdown): Removed.
(rb_big_lshift): Use big_shift2 and big_shift3.
(rb_big_rshift): Ditto.
(big_lshift): Removed.
(big_rshift): Ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41942 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(bigrsh_bang): Ditto.
(bigmul1_toom3): Use bary_small_lshift and bary_small_rshift.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41935 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(mulfunc_t): New type.
(bary_mul_toom3_start): Renamed from bary_mul.
(bary_mul_karatsuba_start): Renamed from bary_mul.
(bary_mul_balance_with_mulfunc): Renamed from bary_mul_balance and
new argument, mulfunc, is added.
(rb_big_mul_balance): Invoke bary_mul_balance_with_mulfunc with
bary_mul_toom3_start.
(bary_mul_karatsuba): Invoke bary_mul_karatsuba_start instead of
bary_mul.
(bary_mul_precheck): Extracted from bary_mul.
(bary_mul_karatsuba_branch): Extracted from bary_mul.
(bary_mul_karatsuba_start): New function to call bary_mul_precheck
and bary_mul_karatsuba_branch.
(bary_mul_toom3_branch): Extracted from bary_mul.
(bary_mul_toom3_start): New function to call bary_mul_precheck and
bary_mul_toom3_branch.
(bary_mul): Just call bary_mul_toom3_start.
Arguments for work memory are removed.
(rb_cstr_to_inum): Follow the bary_mul change.
(bigmul0): Ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41913 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(bary_add_one): Replaced by the implementation of bary_plus_one.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41897 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (maxpow_in_bdigit_dbl, maxpow_in_bdigit): select by
preprocessor conditions to reduce dead code and suppress warnings.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41888 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(bary_sub): Returns a borrow flag. Use bary_subb.
(bary_subb): New function for actually calculating subtraction with
borrow.
(bary_sub_one): New function.
(bigadd_core): Use bary_add.
(bary_add): Returns a carry flag. Use bary_addc.
(bary_addc): New function for actually calculating addition with
carry.
(bary_add_one): New function.
(bary_muladd_1xN): Extracted from bary_mul_normal.
(bigmul1_normal): Removed.
(bary_mul_karatsuba): New function.
(bary_mul1): Invoke rb_thread_check_ints after bary_mul_normal.
(bary_mul): Remove most and least significant zeros before actual
multiplication. Use bary_sq_fast, bary_mul_balance,
bary_mul_karatsuba and bigmul1_toom3 as bigmul0.
(bigmul1_balance): Removed.
(bigmul1_karatsuba): Removed.
(bigsqr_fast): Removed.
(bary_sparse_p): Extracted from big_sparse_p.
(big_sparse_p): Removed.
(bigmul0): Use bary_mul.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41821 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ensure not to access zds[2*xn].
(bigsqr_fast): Allocate the result bignum with 2*xn words.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41813 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(maxpow_in_bdigit): Ditto.
(U16): New macro.
(U32): Ditto.
(U64): Ditto.
(U128): Ditto.
(maxpow16_exp): New table.
(maxpow16_num): New table.
(maxpow32_exp): New table.
(maxpow32_num): New table.
(maxpow64_exp): New table.
(maxpow64_num): New table.
(maxpow128_exp): New table.
(maxpow128_num): New table.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41773 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(BDIGIT_DBL_MAX): New macro.
(maxpow_in_bdigit_dbl): New function.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41747 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(rb_cstr_to_inum): Use a better algorithm to compose the result
if input length is very long.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(nlz32): Ditto.
(nlz64): Ditto.
(nlz128): Ditto.
(nlz): Redefined using an above function.
(bitsize): New macro.
(rb_cstr_to_inum): Use bitsize instead of nlz.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41716 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(bary_plus_one): Extracted from bary_2comp.
(bary_2comp): Use bary_neg and bary_plus_one.
(big_extend_carry): Extracted from get2comp.
(get2comp): Use big_extend_carry.
(rb_integer_unpack): Use big_extend_carry.
(rb_big_neg): Use bary_neg.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41695 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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