3760c965af
core.math, bignum/f, shift subnormals before rounding. Fixes #1782
2017-01-23 10:12:20 -08:00
bd630d1464
math.integers: use must-fail instead of ignore-errors.
2016-07-10 20:28:28 -07:00
c133c16377
core: Trim using lists from -tests and clean up a few irregularities.
2016-03-30 18:43:41 -07:00
00338f62f3
factor: put inline on same line as ; for experimentation
2015-08-10 12:55:27 -05:00
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.
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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
89e3cc511e
math: moving >fraction to math.
2015-07-19 16:57:45 -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
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
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
d60d098c11
math.integers: speedup to fixnum-bit?.
2015-06-07 11:08:57 -07:00
eeaa91d6c1
vm: using bignum>fixnum-strict in integer>fixnum-strict.
2014-06-07 09:46:05 -07:00
57f9d78892
improve help by linking to types directly.
2014-05-23 20:20:15 -07:00
5487480126
core: cleanup USING lists.
2013-03-05 10:34:47 -08:00
6d679cf3a2
math.integers: the fixnum-log2 intrinsic didn't work due to inlining.
2013-02-27 17:08:36 -08:00
7ba77673a8
math.integers: faster fixnum-log2.
2013-02-27 16:01:34 -08:00
34aab78998
math.integers: fix docs for fixnum comparisons.
2012-09-21 10:05:33 -07:00
eaed0db99a
Revert "math: speed up integer>fixnum operations."
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This reverts commit b467db9a9a
2012-09-16 07:46:22 -07:00
6ea9c0fc02
math: speed up integer>fixnum operations.
2012-09-15 08:52:06 -07:00
159f5d6344
math.integers: fix docs for >integer.
2012-09-15 08:51:19 -07:00
089bdb1268
math.integers: inline fixnum-log2.
2012-09-10 17:20:12 -07:00
20100d7853
math.integers: faster fixnum-bit?.
2012-08-30 22:40:22 -07:00
cd9dd9d752
core: Throw an error when assigning a bignum to a fixnum tuple slot if the bignum doesn't fit. Fixes #594 .
2012-08-03 14:59:59 -07:00
6994b0eed8
math.integers: Bignum hashcode* -- call bignum>fixnum to avoid a dispatch.
2012-07-23 09:38:12 -07:00
fb4e3ad9bc
compiler: Fix bitand on ratios, floats. Fix shift on ratios, floats. Add integer>fixnum. Fixes #500 .
2012-07-23 09:31:12 -07:00
98fc1e28bd
math.integers: make bignum/f round to even on tie
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Fixes #372
2011-11-26 17:44:29 -08:00
0f5b551790
math.integers: pass tests even if number-base set
2011-11-26 17:37:17 -08:00
269fe9ea1a
math.integers: test round-to-even-on-tie behavior
2011-11-26 16:03:43 -08:00
90f34d092c
math: neg? needs to be defined for all reals
2011-11-26 15:37:58 -08:00
4e8a1d0bb4
math: add neg? word
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Do the right thing with integers or floats
2011-11-23 19:51:05 -08:00
943596575a
use radix literals
2011-11-23 19:03:40 -08:00
4ebe5218c7
Update Windows for word renames, fix lint errors
2011-10-24 21:50:02 -07:00
5a943b32c4
Remove stack effects from HELP: declarations.
2011-10-20 19:36:11 -07:00
afc07c0e05
io.binary: make le> and be> faster (20% and 75%, respectively).
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Removed primitive byte-array>bignum and digit_stream_to_bignum from vm/.
2011-10-11 21:13:30 -07:00
bb4529bff2
math.integers: fix underflow and overflow behavior
2010-12-18 16:00:17 -08:00
f27080498d
Remove bignum>float VM primitive, and use bignum/f to implement >float on bignums instead, for a slight accuracy gain. Also, bignum/f now has a more efficient post-scaling algorithm to break the circular dependency on bignum>float
2010-11-24 22:41:15 -08:00
0c840a7965
math.integers: bignum/f rounding was wrong (reported by Joe Groff)
2010-11-13 16:02:12 -08:00
65dcd56b0b
math.integers: fix 0 0 bignum/f (reported by Joe Groff)
2010-11-12 19:49:18 -08:00
1c9a95122a
math.integers: remove a -rot usage
2010-02-10 15:44:49 +13:00
52f2ac2bb9
Tests for propagation additions; making fixnum-bit? inline
2010-01-25 20:15:17 -06:00
d3590ea210
Merge branch 'master' of git://factorcode.org/git/factor
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Conflicts:
basis/compiler/tree/propagation/transforms/transforms.factor
2010-01-20 00:15:55 -06:00
aa1651032d
Adding compiler transforms in propagation
2010-01-20 00:10:49 -06:00
4c71d71907
random is generic now -- iota random -> random
2010-01-14 12:48:57 -06:00
df4fb4a3ee
Removing integers-as-sequences
2010-01-15 07:15:33 +13:00
Jon Harper
John Benediktsson
Doug Coleman
Joe Groff
Slava Pestov
Daniel Ehrenberg