f3ebc3f3d2
Remove attribution from file headers, per discussion on llvmdev.
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llvm-svn: 45418
2007-12-29 20:36:04 +00:00
a087a8d2ce
remove attribution from lib Makefiles.
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llvm-svn: 45415
2007-12-29 20:09:26 +00:00
ee6af40c95
Cygwin defines uint32_t as unsigned long. Unbreak call to std::min in this case
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llvm-svn: 45342
2007-12-24 11:16:47 +00:00
0b1df1d3da
Don't have APInt.cpp depend upon DerivedTypes.h. This helps with splitting the
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Support libraries separately into their own module.
llvm-svn: 44852
2007-12-11 06:53:58 +00:00
e5256754e7
proper #include order.
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llvm-svn: 44707
2007-12-08 19:00:03 +00:00
4b41a6f529
Adding a StringPool data structure, which GC will use.
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llvm-svn: 44705
2007-12-08 17:07:47 +00:00
06f20ea4ba
Prior commit updated wrong if, apologies.
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llvm-svn: 44614
2007-12-05 13:06:04 +00:00
3ab004bca6
Handle zero correctly.
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llvm-svn: 44613
2007-12-05 13:01:24 +00:00
9d43e3d841
Handle 0 correctly in string->APFloat conversion.
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llvm-svn: 44594
2007-12-05 01:10:19 +00:00
893fe3bbd1
Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros.
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llvm-svn: 44296
2007-11-23 22:42:31 +00:00
c2c4c7456c
Fix APInt::countTrailingZeros to return BitWidth if the input is zero instead of returning some random large number.
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llvm-svn: 44294
2007-11-23 22:36:25 +00:00
44158478bb
Fix the Linker testcase regressions, by making MemoryBuffer::getFileOrSTDIN return
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a valid but empty buffer if stdin is empty.
llvm-svn: 44219
2007-11-18 18:52:28 +00:00
06a10df562
Fix denormal check in float->APInt conversion.
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PR 1804.
llvm-svn: 44201
2007-11-17 01:02:27 +00:00
581f006f5d
make smallptrset more const and type correct, which caught a few
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minor bugs.
llvm-svn: 43782
2007-11-06 22:12:43 +00:00
758d0fd736
Remove some unnecessary C-style statics.
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Restore an assertion that arithmetic can be performed on this format.
llvm-svn: 43638
2007-11-02 15:10:05 +00:00
ae077d232c
Add back line whose removal somehow crept into prior patch
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llvm-svn: 43627
2007-11-01 22:51:07 +00:00
618d0fc377
When converting to integer, do bit manipulations in the destination
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memory rather than in a copy of the APFloat. This avoids problems
when the destination is wider than our significand and is cleaner.
Also provide deterministic values in all cases where conversion
fails, namely zero for NaNs and the minimal or maximal value
respectively for underflow or overflow.
llvm-svn: 43626
2007-11-01 22:43:37 +00:00
fc69d322f2
Clarified operator precedence.
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Silenced VC++ warning.
llvm-svn: 43372
2007-10-25 23:15:31 +00:00
1b88e3c2dd
This requires rtti info because tblgen uses commandline,
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and tblgen requires rtti.
llvm-svn: 43127
2007-10-18 15:57:29 +00:00
9130551996
Fast-track obviously over-large and over-small exponents during decimal->
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integer conversion. In some such cases this makes us one or two orders
of magnitude faster than NetBSD's libc. Glibc seems to have a similar
fast path.
Also, tighten up some upper bounds to save a bit of memory.
llvm-svn: 42984
2007-10-15 15:00:55 +00:00
5fe658b21d
Consolidate logic for creating NaNs. Silence compiler warning.
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llvm-svn: 42966
2007-10-14 10:39:51 +00:00
06077e7c3c
Whether arithmetic is supported is a property of the semantics. Make it
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so, and clean up the checks by putting them in an inline function.
llvm-svn: 42965
2007-10-14 10:29:28 +00:00
4ed401b898
Separate out parsing of decimal number. Use this to only allocate
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memory for the significand once up-front. Also ignore insignificant
trailing zeroes; this saves unnecessary multiplications later.
llvm-svn: 42964
2007-10-14 10:16:12 +00:00
c799fe9ed9
If the power of 5 is exact, and the reciprocal exact, the error is zero not one half-ulps. This prevents an infinite loop in rare cases.
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llvm-svn: 42950
2007-10-13 03:34:08 +00:00
d502a82092
Remove duplicate comment.
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llvm-svn: 42913
2007-10-12 16:05:57 +00:00
b93d90e98c
Implement correctly-rounded decimal->binary conversion, i.e. conversion
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from user input strings.
Such conversions are more intricate and subtle than they may appear;
it is unlikely I have got it completely right first time. I would
appreciate being informed of any bugs and incorrect roundings you
might discover.
llvm-svn: 42912
2007-10-12 16:02:31 +00:00
e9dbe094aa
Remove a field that was never used.
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llvm-svn: 42911
2007-10-12 15:35:10 +00:00
146fdb3eeb
If we're trying to be arbitrary precision, unsigned char clearly won't cut it. Needed for dec->bin conversions.
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llvm-svn: 42910
2007-10-12 15:33:27 +00:00
7e74b17ad2
Don't attempt to mask no bits
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llvm-svn: 42909
2007-10-12 15:31:31 +00:00
007aa378ad
Next PPC long double bits. First cut at constants.
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No compile-time support for constant operations yet,
just format transformations. Make readers and
writers work. Split constants into 2 doubles in
Legalize.
llvm-svn: 42865
2007-10-11 18:07:22 +00:00
f5ea386698
Add new MemoryBuffer::getMemBufferCopy method.
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llvm-svn: 42815
2007-10-09 21:46:38 +00:00
66966403ce
Pass argc by value, not by reference, since it isn't modified.
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llvm-svn: 42788
2007-10-09 16:04:57 +00:00
5c50f59690
Change a #include into a forward declaration
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llvm-svn: 42781
2007-10-09 03:40:30 +00:00
2c6a821fd7
Move the space in overview output for commands out of each of the
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commands and into the common code.
llvm-svn: 42752
2007-10-08 15:45:12 +00:00
49c6aab7b8
Use APInt::tcExtract. It's cleaner, and works :)
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llvm-svn: 42746
2007-10-08 14:39:42 +00:00
b618216e56
Add a new function tcExtract for extracting a bignum from an
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arbitrary range of bits embedded in the middle of another bignum.
This kind of operation is desirable in many cases of software
floating point, e.g. converting bignum integers to floating point
numbers of fixed precision (you want to extract the precision most
significant bits).
Elsewhere, add an assertion, and exit the shift functions early if
the shift count is zero.
llvm-svn: 42745
2007-10-08 13:47:12 +00:00
03f58ab706
Add back convertFromSignExtendedInteger.
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llvm-svn: 42735
2007-10-07 12:15:41 +00:00
ba205229e7
Now that convertFromUnsignedParts has a sane, constant interface,
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convertFromZeroExtendedInteger can be simplified as it doesn't need
to make a copy of the source bignum.
llvm-svn: 42734
2007-10-07 12:10:57 +00:00
6c1c8588ae
Reimplement convertFromUnsignedInteger so it is passed a const bignum.
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It used to modify its argument in-place.
This interface is saner and the implementation more efficient. It will
be needed for decimal->binary conversion.
llvm-svn: 42733
2007-10-07 12:07:53 +00:00
5f00973393
convertFromInteger, as originally written, expected sign-extended
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input. APInt unfortunately zero-extends signed integers, so Dale
modified the function to expect zero-extended input. Make this
assumption explicit in the function name.
llvm-svn: 42732
2007-10-07 11:45:55 +00:00
d3985924f4
combineLostFractions does not need to be a member function
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llvm-svn: 42729
2007-10-07 08:51:21 +00:00
32897f5eb0
Cleaner, more general exponent output.
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llvm-svn: 42690
2007-10-06 07:29:25 +00:00
2a9bcb9ea7
silence warnings in no-assert build.
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llvm-svn: 42687
2007-10-06 06:13:42 +00:00
c8b650ab14
Fix and clarify some comments.
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llvm-svn: 42670
2007-10-06 00:43:45 +00:00
0ea72a9a91
Generalize tcFullMultiply so that the operands can be of differing
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part widths. Also, return the number of parts actually required to
hold the result's value.
Remove an over-cautious condition from rounding of float->hex conversion.
llvm-svn: 42669
2007-10-06 00:24:48 +00:00
8f1946fa22
Add APFloat -> hexadecimal string conversion, as per %a and %A in C99.
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Useful for diagnostics and debugging.
llvm-svn: 42598
2007-10-03 22:26:02 +00:00
99f6ab7e4c
Add initial iterator support for folding set.
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llvm-svn: 42589
2007-10-03 21:12:09 +00:00
8c41ed61d1
Simplify implementation of the FoldingSet circular list, a necessary step
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to giving it iterators.
llvm-svn: 42586
2007-10-03 20:45:43 +00:00
1ca1f80b38
Tweak RoundAwayFromZero the bit number below which is truncated, and make
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it const.
Preparation for APFloat -> hexadecimal string conversion.
llvm-svn: 42576
2007-10-03 15:16:41 +00:00
28a2c4a9c4
Simplify and fix signed int -> FP conversions.
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llvm-svn: 42483
2007-09-30 18:17:01 +00:00
Chris Lattner