53efceb0ad
math.integers, comment and simplify bignum/f
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change the "while" that could only execute once to "when"
change the f/loop word name to "mantissa-and-guard" since it's what it
computes
change the check against 2^53 to be explicit
2015-07-26 12:33:56 -07:00
5424ad5586
math.integers, bignum/f, improve performance.
...
This changes avoids looping many times if the denominator is a power of
2. After this change, the implementation matches the linked sbcl
algorithm. This was probably a mistake done when porting the algorithm.
Basically, as an optimization, all trailing zeros are removed from the
base2 representation of the denominator to have smaller bignums to
divide. But the previous factor implementation didn't take this into
account when making the initial guess of the shift of the numerator to
obtain a result in the range [2^54-1,2^53]. The loop would then correct
the initial guess by a factor of 2 at each iteration, so it would run as
many iteration as the denominator base2 power reduction, instead of only
a few times. For pathological cases, the speed up is huge (10^4):
1 1000 2^ bignum/f
2015-07-26 12:33:55 -07:00
cc6d90a096
math.integers, fix bignum/f for results in ]0x1.0p-1022,0x0.4p-1022]
2015-07-26 12:33:55 -07:00
296974a057
math.parser: remove digits>integer.
2015-07-19 19:18:47 -07:00
16c93c7874
math.parser: simplify fix-float.
2015-07-19 17:20:37 -07:00
0dbc5e7d67
math.parser: simplify { integer ratio } >base.
2015-07-19 16:57:45 -07:00
89e3cc511e
math: moving >fraction to math.
2015-07-19 16:57:45 -07:00
4cda3fe7c4
math.parser: re-use number-parse and float-parse objects.
2015-07-19 09:58:17 -07:00
d2ab2e6dd1
math.parser.tests: Fix whitespace.
2015-07-17 15:19:39 -07:00
c7868226d0
math.parser: simplify using member-eq?.
2015-07-16 09:55:33 -07:00
33a62c7f9d
math.parser: with-radix-char quot shouldn't get called with ``f``.
2015-07-16 08:51:58 -07:00
e280bafabe
math.parser: remove unnecessary with-no-radix, thanks @jonenst!
2015-07-16 07:35:51 -07:00
f6f596f40f
math.parser: okay time for sleep, maybe this works, sorry git history.
2015-07-14 22:48:08 -07:00
5b58e1d3e8
math.parser: fix a regression.
2015-07-14 22:05:25 -07:00
94bb834eae
math.parser: fix ``"-.5" dec>``.
2015-07-14 20:16:34 -07:00
866b40271d
math.parser: fix "most-negative-fixnum number>string string>number fixnum?".
2015-07-14 20:03:33 -07:00
43d6f1d3e2
factor: Retrying on the unit tests. Also normalize some syntax with FUNCTION:.
2015-07-02 17:28:17 -07:00
59f3b1ea57
Revert "factor: rename [ ] [ ] unit-test -> { } [ ] unit-test using a refactoring tool!"
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Needs a bit more work.
This reverts commit 7e54cc2824
2015-07-02 13:47:06 -07:00
7e54cc2824
factor: rename [ ] [ ] unit-test -> { } [ ] unit-test using a refactoring tool!
2015-07-02 11:36:08 -07:00
999aa7c897
factor: clean up spaces in -tests files
2015-07-02 10:34:01 -07:00
e3cb325040
factor: clean up whitespace in -docs files
2015-07-02 10:31:22 -07:00
69ee8b9190
core, basis: Don't use the IN: foo.private feature and undocument it.
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It only works well when you are loading code dynamically.
2015-06-30 08:51:07 -07:00
ed702209ce
VM: fix bignum>fixnum-strict conversion, previously most-negative-fixnum
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>bignum bignum>fixnum-strict didn't work
2015-06-29 08:19:42 +02:00
44e8e7b344
primitives: Change PRIMITIVE: to check that the word is in that vocabulary and the stack effect is correct.
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Use PRIMITIVE: in core/ and basis/
2015-06-25 18:02:03 -07:00
7dfe023854
math.integers: add some more tests for bit?.
2015-06-17 20:23:21 -07:00
621b50a8e5
cpu: enable bit-test intrinsic for fixnum-bit?.
2015-06-17 19:11:10 -07:00
db9cfeeae2
math.integers: simplify fixnum-bit?.
2015-06-17 18:42:11 -07:00
ed786070e2
math.integers: fixnum-bit? should not use fixnum-shift-fast.
2015-06-17 08:22:00 -07:00
ccddbebf94
math.parser: slightly faster ((pow)).
2015-06-11 20:04:44 -07:00
d60d098c11
math.integers: speedup to fixnum-bit?.
2015-06-07 11:08:57 -07:00
2c3492a916
minor cleanup to some docs.
2015-05-13 16:09:14 -07:00
9033a28c09
math.parser: simplify store-exponent.
2014-11-29 14:31:23 -08:00
38bc43b968
math.parser: whoops, this part shouldn't have been committed.
2014-11-29 12:54:48 -08:00
cbba812d7e
math.parser: remove float>string, speedup format-float.
2014-11-29 12:47:57 -08:00
632ee276e1
core: Remove trailing whitespace.
2014-10-31 01:14:31 -07:00
53a9c43b31
math.parser: fix docs for >base and base>.
2014-06-07 12:05:52 -07:00
24ad4e9424
math: remove out-of-fixnum-range error.
2014-06-07 09:50:50 -07:00
eeaa91d6c1
vm: using bignum>fixnum-strict in integer>fixnum-strict.
2014-06-07 09:46:05 -07:00
309ce3aa69
math: adding a simple test for bignum_square.
2014-06-06 10:58:58 -07:00
57f9d78892
improve help by linking to types directly.
2014-05-23 20:20:15 -07:00
98935b7f15
docs: change ``{ $quotation "( x -- y )" }`` to ``{ $quotation ( x -- y ) }``.
2014-05-18 20:09:10 -07:00
ede21dfb56
math: fix docs for next-power-of-2 and some tests.
2014-02-06 17:23:54 -08:00
63514bbbf8
math: fix quot stack effect in unless-zero.
2014-01-07 08:25:18 -08:00
8aac272c58
math.floats: shorten definitions using "bit?".
2013-11-25 11:07:06 -08:00
5793229dae
math.floats: fix M\ float /mod.
2013-03-29 08:48:28 -07:00
37ca02a84e
math.floats: adding some tests for M\ float mod.
2013-03-29 08:30:56 -07:00
ff72d10fda
math.parser: don't use variables in M\ ratio >base.
2013-03-28 14:31:55 -07:00
412382abca
math.parser: exactly allocate sbuf for fixnums.
2013-03-28 11:55:52 -07:00
bf0f6476f5
math.parser: do two digits down until 10.
2013-03-27 18:01:59 -07:00
b5b0839426
math.parser: faster using byte-arrays.
2013-03-27 17:54:24 -07:00
Jon Harper
John Benediktsson
Doug Coleman
Björn Lindqvist