b5801cd730
mruby-bigint (mrb_bint_new_int64): fixed a bug on the 32bit platforms
2024-10-11 14:19:33 +09:00
f4fdf25bb0
mruby-bigint (mrb_bint_new_int64): wrong return value
2024-10-11 08:41:51 +09:00
6f97cf10e9
docs: fix grammar
2024-10-11 04:07:58 +10:00
6d4de2496c
mruby-bigint: remove unused macros; ref #6371
2024-10-10 23:14:27 +09:00
e21055604c
mruby-bigint: separate mpz and bint functions; ref #6371
...
The pull-request #6371 was tight integration of mpz and bint functions.
The mpz functions take `struct RBigint*` instead of `mpz_t*`. It
decrease maintainability, in my opinion. This commit initializes `mpz_t`
from `struct RBigint*` in bint functions, so that we can keep separation
of function roles.
2024-10-10 23:04:04 +09:00
12b97ceb78
fixup! Merge branch 'bigint-embed' of https://github.com/dearblue/mruby into bigint-embed
2024-10-10 22:57:32 +09:00
bda2fa39d2
Merge branch 'bigint-embed' of https://github.com/dearblue/mruby into bigint-embed
2024-10-10 22:31:55 +09:00
b56ad8fdee
mruby-bigint: improve mpz_mul_int() and mpz_add_int()
...
Both functions are only called from mpz_init_set_str(). We can assume
- mpz_t is modifiable
- mpz_t is positive
- n is positive and small (n <= 36)
Those new definitions consume less memory and are slightly faster.
2024-10-08 16:09:46 +09:00
3b06ad4737
mruby-bigint (mpz_mul): cancel Karatsuba algorithm
...
We tried many times to implement the Karatsuba method to improve the
performance of multiplication of large multi-precision integers. But it
did not speed up in all cases due to the cost of memory allocation. We
decided to go back to the basic multiplication method.
If anyone wants to take on the challenge of improving the performance of
multiplication, we welcome it.
2024-10-08 16:02:19 +09:00
77fb1b1b65
mruby-bigint (mul_karatsuba): use byte-wise addition to combine
2024-10-07 07:28:24 +09:00
6366f1cbb9
Update mrbgems/mruby-bigint/core/bigint.h
...
Co-authored-by: John Bampton <jbampton@users.noreply.github.com >
2024-10-06 23:03:03 +09:00
009a79b5c9
Embedding in RBigint objects
...
Integers up to 3 words long will no longer allocate heap space.
2024-10-06 22:28:22 +09:00
40c7febca8
mruby-bigint (uadd): remove redundant trim()
2024-10-05 15:08:16 +09:00
be9da7199b
mruby-bigint (mul_karatsuba) improve performance
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Unnecessary mpz_t u0u1 and v0v1 are removed.
2024-10-05 10:57:42 +09:00
32aed6ad8c
mruby-bigint: increase KARATSUBA_THREASHOLD to 512
...
Since Karatsuba algorithm is far heavier than the basic multiplication,
we have increased KARATSUBA_THREASHOLD and decreased MAX_RECURSION_DEPTH.
2024-10-04 18:10:14 +09:00
6820da1526
mruby-bigint (mpz_abs): use zero_p()
2024-10-04 18:10:14 +09:00
fd8d3a8d70
mruby-bigint: use zero() to make mpz_t zero.
2024-10-04 18:10:14 +09:00
6274f8de43
mruby-bigint (mpz_sub): avoid data copy
...
Since mpz_sub() calls mpz_add() with opposite sign, refer same data from
the original, instead of copying whole data.
2024-10-04 18:10:14 +09:00
363754b5d1
mruby-bigint (uzero_p): check from the top, not bottom
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For most of the case, the first non-zero value would be found earlier
when search starts from the top.
2024-10-04 18:10:14 +09:00
fcc1832efc
mruby-bigint (mul_karatsuba): avoid copying operand u and v
2024-09-30 18:32:26 +09:00
0023cbdb3d
mruby-bigint (mpz_mul): use Karatsuba algorithm to improve performance
2024-09-28 05:26:40 +09:00
f6caf0d788
mruby-bigint (mrb_init_set_str): reduce mpz_t allocations
2024-09-19 20:52:11 +09:00
bdbf8536a7
mruby-bigint: rename add_d and sub_d to add_n and sub_n respectively
...
`_n` suffix represents `no_normalize`.
2024-09-15 03:02:41 +09:00
44908e5cba
mruby-rational: support bigint numerators & denominators
2024-08-16 15:12:03 +09:00
92f476d8fa
mruby-bigint (mpz_set): trim destination mpz_t
2024-08-16 07:32:05 +09:00
e9c4486e27
mruby-bigint: add fast path to mrb_bint_mul() & mrb_bint_div()
2024-08-14 22:36:47 +09:00
6e5a493ff3
mruby-bigint (mrb_bint_new_float): add fast path for FIXABLE_FLOAT
2024-08-14 16:11:27 +09:00
6da2e60edc
mruby-bigint (mpz_get_str): avoid malloc when base is a power of 2
2024-08-05 10:43:47 +09:00
ab95e042ca
mruby-bigint (mrb_bint_xor): add fast path with fixnums
2024-07-29 16:44:54 +09:00
b706c89c41
mruby-bigint (mrb_bint_2comp): fix assertion
2024-07-29 16:44:54 +09:00
bf7f14341d
mruby-bigint (mrb_bint_or): add fast path with fixnums
2024-07-29 15:47:19 +09:00
dcf7adeeb7
mruby-bigint: use zero_p()
2024-07-29 15:43:22 +09:00
196c2bd0b9
mruby-bigint (mrb_bint_add): add type cast to stop warnings in C++
2024-07-28 23:29:54 +09:00
081cd0627f
mruby-bigint (mrb_bint_hash): need to get hash from all digits
2024-07-27 18:54:50 +09:00
203a89a3f2
mruby-bigint (zero_p): define a new predicate to check if mpz_t is 0
2024-07-27 18:54:50 +09:00
234a2b10fb
mruby-bigint (mpz_neg): no need to check x != y
2024-07-27 18:54:50 +09:00
811637e99f
mruby-bigint (mrb_bint_2comp): inline mpz_2comp
2024-07-27 18:54:49 +09:00
c218894af9
mruby-bigint: use mp_limb instead of uint32_t
...
Because mp_limb may be uint16_t on some platforms.
2024-07-27 18:54:48 +09:00
2247e4f355
mruby-bigint (mpz_xor): simplify the code
2024-07-27 18:53:36 +09:00
b573a8430f
mruby-bigint (mpz_or): simplify the code
2024-07-27 18:50:09 +09:00
dea1cc18a6
mruby-bigint (mpz_and): simplify the code
2024-07-27 18:48:01 +09:00
bf081c3d3d
mruby-bigint (mrb_bint_and): further optimization for bint & int
2024-07-25 17:46:36 +09:00
99c078bb6b
mruby-bigint (mrb_bint_2comp): simplify using mpz_2comp()
2024-07-25 16:18:49 +09:00
3d69412ea5
mruby-bigint: Distinguish uzero_p(x) and x->sn == 0
...
The latter is a check for integers that have been set up (and disclosed to the
outer world), while the former is a check for integers that are being worked on.
2024-07-25 16:18:48 +09:00
93653dfd4c
mruby-bigint (uzero_p): add fast path
2024-07-25 16:18:48 +09:00
4ee7c8e021
mruby-bigint: rename uzero to uzero_p
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Since uzero() is a predicate, and zero() is a function to assign zero to
mpz_t, it's confusion. Rename predicate uzero() to uzero_p() to follow
mruby naming convention.
2024-07-25 16:18:48 +09:00
88536ebe30
mruby-bigint (mpz_xor): support bit-wise xor with negative numbers; #6314
2024-07-25 16:18:48 +09:00
ee2eb6c87e
mruby-bigint (mpz_or): support bit-wise or with negative numbers; #6314
2024-07-25 16:18:48 +09:00
69a80c94b9
mruby-bigint (mpz_and): support bit-wise and with negative numbers
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Negative integers are virtually considered as 2's compliment of the
absolute value of the corresponding number. It means `-1` is considered
as infinite sequence of `1` toward msb side. ref #6314
2024-07-25 16:18:48 +09:00
e3a459d5b9
mruby-bigint (mrb_bint_and): optimize bint & fixnum operation; ref #6314
2024-07-25 16:18:48 +09:00
Yukihiro "Matz" Matsumoto