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path: root/llvm/lib/Support/APFloat.cpp
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* Fixed parsing of hex floats.Abramo Bagnara2011-01-061-4/+4
| | | | llvm-svn: 122963
* PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() andJay Foad2010-12-071-3/+3
| | | | | | | | zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method trunc(), to be const and to return a new value instead of modifying the object in place. llvm-svn: 121120
* PR5207: change APInt::doubleToBits() and APInt::floatToBits() to beJay Foad2010-11-281-4/+2
| | | | | | static methods that return a new APInt. llvm-svn: 120261
* Do not assert when reading an exponent out of range.Dale Johannesen2010-08-191-0/+1
| | | | llvm-svn: 111534
* Don't pass StringRef by reference.Benjamin Kramer2010-07-141-5/+4
| | | | llvm-svn: 108366
* Fix minor style issues.Dan Gohman2010-03-241-143/+141
| | | | llvm-svn: 99414
* make APFloat::toString be const.Chris Lattner2010-03-061-1/+1
| | | | llvm-svn: 97883
* Don't potentially read past the end of the fill data when making a NaN fromJohn McCall2010-03-011-1/+2
| | | | | | an APInt. llvm-svn: 97467
* Properly clear all the extra bits in a significand when making a NaN from anJohn McCall2010-02-281-8/+28
| | | | | | | APInt. Be certain to set the integer bit in an x87 extended-precision significand so that we don't accidentally make a pseudo-NaN. llvm-svn: 97382
* Teach APFloat how to create both QNaNs and SNaNs and with arbitrary-widthJohn McCall2010-02-281-11/+36
| | | | | | | | payloads. APFloat's internal folding routines always make QNaNs now, instead of sometimes making QNaNs and sometimes SNaNs depending on the type. llvm-svn: 97364
* Make APFloat's string-parsing routines a bit safer against very large exponents.John McCall2010-02-261-2/+16
| | | | llvm-svn: 97278
* Implement support for converting to string at "natural precision", and fix someJohn McCall2009-12-241-16/+26
| | | | | | major bugs in long-precision conversion. llvm-svn: 92150
* Substantially optimize APFloat::toString() by doing a single large divide toJohn McCall2009-12-241-0/+37
| | | | | | | | | | | | cut the significand down to the desired precision *before* entering the core divmod loop. Makes the overall algorithm logarithmic in the exponent. There's still a lot of room for improvement here, but this gets the performance back down to acceptable-for-diagnostics levels, even for long doubles. negligible, even on long doubles. llvm-svn: 92130
* Add accessors for the largest-magnitude, smallest-magnitude, andJohn McCall2009-12-241-0/+301
| | | | | | | | smallest-normalized-magnitude values in a given FP semantics. Provide an APFloat-to-string conversion which I am quite ready to admit could be much more efficient. llvm-svn: 92126
* Remove getIEEEFloatParts and getIEEEDoubleParts. They are not needed.Evan Cheng2009-10-281-50/+0
| | | | llvm-svn: 85358
* Add new APFloat methods that return sign, exp, and mantissa of ieee float ↵Evan Cheng2009-10-271-12/+62
| | | | | | and double values. llvm-svn: 85318
* Commit fixes for half precision I noted in review, soDale Johannesen2009-10-231-3/+3
| | | | | | | they don't get lost; I don't think the originator has write access. llvm-svn: 84928
* Add half precision floating point support (float16) to APFloat,Chris Lattner2009-10-161-1/+69
| | | | | | patch by Peter Johnson! (PR5195) llvm-svn: 84239
* wrap long lines.Chris Lattner2009-09-241-2/+4
| | | | llvm-svn: 82715
* add a version of the APFloat constructor that initializes to 0.0Chris Lattner2009-09-171-0/+8
| | | | llvm-svn: 82110
* Fix typo.Anton Korobeynikov2009-08-211-1/+1
| | | | llvm-svn: 79688
* Implement APInt <-> APFloat conversion for IEEE 128-bit floats.Anton Korobeynikov2009-08-211-3/+83
| | | | | | This fixes PR2555 llvm-svn: 79677
* Add support for including '+' in APFloat strings, more asserts,Erick Tryzelaar2009-08-201-28/+34
| | | | | | and many new unit tests. llvm-svn: 79574
* Fix two APFloat bugs in converting hexadecimal constants.Daniel Dunbar2009-08-201-2/+2
| | | | llvm-svn: 79540
* Fix an uninitialized value warning in APFloat.Erick Tryzelaar2009-08-181-2/+1
| | | | llvm-svn: 79353
* Modify APFloat to take a StringRef instead of a c string.Erick Tryzelaar2009-08-161-63/+106
| | | | | | | This also adds unit tests to APFloat that mainly tests the string handling of APFloat, but not much else of it's api. llvm-svn: 79210
* llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.Torok Edwin2009-07-141-7/+7
| | | | | | | | | This adds location info for all llvm_unreachable calls (which is a macro now) in !NDEBUG builds. In NDEBUG builds location info and the message is off (it only prints "UREACHABLE executed"). llvm-svn: 75640
* assert(0) -> LLVM_UNREACHABLE.Torok Edwin2009-07-111-7/+8
| | | | | | | | | Make llvm_unreachable take an optional string, thus moving the cerr<< out of line. LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for NDEBUG builds. llvm-svn: 75379
* Add support for letting the client choose different flavors of NaNs. ↵Mike Stump2009-05-301-6/+12
| | | | | | | | Testcase to be added in clang. llvm-svn: 72606
* Fix whitespacing (space after switch).Mike Stump2009-05-131-6/+6
| | | | llvm-svn: 71738
* Fix internal representation of fp80 to be theDale Johannesen2009-03-231-8/+6
| | | | | | | | | | same as a normal i80 {low64, high16} rather than its own {high64, low16}. A depressing number of places know about this; I think I got them all. Bitcode readers and writers convert back to the old form to avoid breaking compatibility. llvm-svn: 67562
* just initialize the first element, we don't need to set the rest to zeros.Chris Lattner2009-03-131-3/+3
| | | | llvm-svn: 66850
* Eliminate a 9640 byte static mutable initialized data item by moving itChris Lattner2009-03-131-2/+2
| | | | | | to the stack. This shrinks all llvm tools by 9k, and improves reentrancy. llvm-svn: 66847
* static functions don't need an anonymous namespace.Chris Lattner2009-03-121-373/+371
| | | | llvm-svn: 66845
* Unbreak the build on win32.Cedric Venet2009-02-141-1/+1
| | | | | | | | | | Cleanup some warning. Remark: when struct/class are declared differently than they are defined, this make problem for VC++ since it seems to mangle class differently that struct. These error are very hard to understand and find. So please, try to keep your definition/declaration in sync. Only tested with VS2008. hope it does not break anything. feel free to revert. llvm-svn: 64554
* Do not use host floating point types when emittingDale Johannesen2009-01-211-1/+2
| | | | | | | | | ASCII IR; loading and storing these can change the bits of NaNs on some hosts. Remove or add warnings at a few other places using host floating point; this is a bad thing to do in general. llvm-svn: 62712
* Make special cases (0 inf nan) work for frem.Dale Johannesen2009-01-211-23/+63
| | | | | | | | Besides APFloat, this involved removing code from two places that thought they knew the result of frem(0., x) but were wrong. llvm-svn: 62645
* Add an IEEE remainder function, which is notDale Johannesen2009-01-201-1/+39
| | | | | | | | fully implemented yet and not used. This is mainly to clarify that APFloat::mod implements C fmod, not remainder. llvm-svn: 62593
* compile-time fmod was done incorrectly. PR 3316.Dale Johannesen2009-01-191-2/+4
| | | | llvm-svn: 62528
* Get rid of bogus "control may reach end of non-void function ‘...’ beingBill Wendling2008-11-271-2/+2
| | | | | | inlined" message. llvm-svn: 60165
* Revert r60042. IndVarSimplify should check if APFloat is PPCDoubleDouble ↵Evan Cheng2008-11-261-7/+1
| | | | | | first before trying to convert it to an integer. llvm-svn: 60072
* convertToSignExtendedInteger should return opInvalidOp instead of asserting ↵Evan Cheng2008-11-251-1/+7
| | | | | | if sematics of float does not allow arithmetics. llvm-svn: 60042
* Add a "loses information" return value to APFloat::convertDale Johannesen2008-10-091-14/+37
| | | | | | | and APFloat::convertToInteger. Restore return value to IEEE754. Adjust all users accordingly. llvm-svn: 57329
* Rename APFloat::convertToAPInt to bitcastToAPInt toDale Johannesen2008-10-091-4/+4
| | | | | | | make it clearer what the function does. No functional change. llvm-svn: 57325
* Mark negative-zero-to-int conversion as Inexact,Dale Johannesen2008-10-071-1/+2
| | | | | | | | | since -0.0 can't be represented as an int. This prevents llvm from reducing -0.0 to a load-and-convert of int 0. Fixes ieee.exp/mzero[2356].c in gcc testsuite. llvm-svn: 57224
* Be more precise about which conversions of NaNsDale Johannesen2008-10-061-3/+18
| | | | | | | | are Inexact. (These are not Inexact as defined by IEEE754, but that seems like a reasonable way to abstract what happens: information is lost.) llvm-svn: 57218
* Temporarily revert functionality change from my previous patch;Dale Johannesen2008-10-061-2/+1
| | | | | | it is too aggressive. llvm-svn: 57203
* Mark shortening NaN conversions as Inexact. PR 2856.Dale Johannesen2008-10-061-6/+9
| | | | | | Improve description of unsupported formats. llvm-svn: 57185
* Rework the routines that convert AP[S]Int into a string. Now, instead ofChris Lattner2008-08-171-2/+1
| | | | | | | | | | | | | | | | | returning an std::string by value, it fills in a SmallString/SmallVector passed in. This significantly reduces string thrashing in some cases. More specifically, this: - Adds an operator<< and a print method for APInt that allows you to directly send them to an ostream. - Reimplements APInt::toString to be much simpler and more efficient algorithmically in addition to not thrashing strings quite as much. This speeds up llvm-dis on kc++ by 7%, and may also slightly speed up the asmprinter. This also fixes a bug I introduced into the asmwriter in a previous patch w.r.t. alias printing. llvm-svn: 54873
* remove a dead APInt ctor.Chris Lattner2008-08-171-0/+1
| | | | llvm-svn: 54869
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