1 //===- APFixedPoint.cpp - Fixed point constant handling ---------*- C++ -*-===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
12 //===----------------------------------------------------------------------===//
35   int RelativeUpscale = getLsbWeight() - DstSema.getLsbWeight();  in convert()
45       std::min(DstSema.getIntegralBits() - DstSema.getLsbWeight(),  in convert()
81   unsigned CommonWidth = CommonMsb - CommonLsb + 1;  in compare()
86   ThisVal = ThisVal.shl(getLsbWeight() - CommonLsb);  in compare()
87   OtherVal = OtherVal.shl(Other.getLsbWeight() - CommonLsb);  in compare()
93       return -1;  in compare()
98       return -1;  in compare()
101       return -1;  in compare()
105       return -1;  in compare()
113       return -1;  in compare()
164   int CommonMSb = std::max(getMsbWeight() - hasSignOrPaddingBit(),  in getCommonSemantics()
165                            Other.getMsbWeight() - Other.hasSignOrPaddingBit());  in getCommonSemantics()
166   unsigned CommonWidth = CommonMSb - CommonLsb + 1;  in getCommonSemantics()
245   unsigned Wide = CommonFXSema.getWidth() * 2;  in mul()  local
247     ThisVal = ThisVal.sext(Wide);  in mul()
248     OtherVal = OtherVal.sext(Wide);  in mul()
250     ThisVal = ThisVal.zext(Wide);  in mul()
251     OtherVal = OtherVal.zext(Wide);  in mul()
258   // outside the representable range. We interpret the spec as allowing us to  in mul()
271   // If our result lies outside of the representative range of the common  in mul()
274                                                  .extOrTrunc(Wide);  in mul()
276                                                  .extOrTrunc(Wide);  in mul()
304   unsigned Wide =  in div()  local
305       CommonFXSema.getWidth() * 2 + std::max(-CommonFXSema.getMsbWeight(), 0);  in div()
307     ThisVal = ThisVal.sext(Wide);  in div()
308     OtherVal = OtherVal.sext(Wide);  in div()
310     ThisVal = ThisVal.zext(Wide);  in div()
311     OtherVal = OtherVal.zext(Wide);  in div()
317     ThisVal = ThisVal.shl(-CommonFXSema.getLsbWeight());  in div()
327       Result = Result - 1;  in div()
332   // If our result lies outside of the representative range of the common  in div()
335                                                  .extOrTrunc(Wide);  in div()
337                                                  .extOrTrunc(Wide);  in div()
358   unsigned Wide = Sema.getWidth() * 2;  in shl()  local
360     ThisVal = ThisVal.sext(Wide);  in shl()
362     ThisVal = ThisVal.zext(Wide);  in shl()
369   // If our result lies outside of the representative range of the  in shl()
371   APSInt Max = APFixedPoint::getMax(Sema).getValue().extOrTrunc(Wide);  in shl()
372   APSInt Min = APFixedPoint::getMin(Sema).getValue().extOrTrunc(Wide);  in shl()
403     Val = -Val;  in toString()
405     Str.push_back('-');  in toString()
408   int Scale = -getLsbWeight();  in toString()
439     return APFixedPoint(-Val, Sema);  in negate()
447     return Val.isMinSignedValue() ? getMax(Sema) : APFixedPoint(-Val, Sema);  in negate()
500   // Make sure that we are operating in a type that works with this fixed-point  in convertToFloat()
557   // Make sure that we are operating in a type that works with this fixed-point  in getFromFloatValue()
570   // the integer range instead. Rounding mode is irrelevant here.  in getFromFloatValue()
573   APFloat ScaleFactor(std::pow(2, -DstFXSema.getLsbWeight()));  in getFromFloatValue()
585   // representable range of the fixed-point semantic even though no overflow  in getFromFloatValue()
593   // is outside the range representable by the fixed-point value.  in getFromFloatValue()