diff options
Diffstat (limited to 'deps/node/deps/icu-small/source/i18n/double-conversion-diy-fp.h')
-rw-r--r-- | deps/node/deps/icu-small/source/i18n/double-conversion-diy-fp.h | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/deps/node/deps/icu-small/source/i18n/double-conversion-diy-fp.h b/deps/node/deps/icu-small/source/i18n/double-conversion-diy-fp.h deleted file mode 100644 index 21896851..00000000 --- a/deps/node/deps/icu-small/source/i18n/double-conversion-diy-fp.h +++ /dev/null @@ -1,136 +0,0 @@ -// © 2018 and later: Unicode, Inc. and others. -// License & terms of use: http://www.unicode.org/copyright.html -// -// From the double-conversion library. Original license: -// -// Copyright 2010 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following -// disclaimer in the documentation and/or other materials provided -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -// ICU PATCH: ifdef around UCONFIG_NO_FORMATTING -#include "unicode/utypes.h" -#if !UCONFIG_NO_FORMATTING - -#ifndef DOUBLE_CONVERSION_DIY_FP_H_ -#define DOUBLE_CONVERSION_DIY_FP_H_ - -// ICU PATCH: Customize header file paths for ICU. - -#include "double-conversion-utils.h" - -// ICU PATCH: Wrap in ICU namespace -U_NAMESPACE_BEGIN - -namespace double_conversion { - -// This "Do It Yourself Floating Point" class implements a floating-point number -// with a uint64 significand and an int exponent. Normalized DiyFp numbers will -// have the most significant bit of the significand set. -// Multiplication and Subtraction do not normalize their results. -// DiyFp are not designed to contain special doubles (NaN and Infinity). -class DiyFp { - public: - static const int kSignificandSize = 64; - - DiyFp() : f_(0), e_(0) {} - DiyFp(uint64_t significand, int exponent) : f_(significand), e_(exponent) {} - - // this = this - other. - // The exponents of both numbers must be the same and the significand of this - // must be bigger than the significand of other. - // The result will not be normalized. - void Subtract(const DiyFp& other) { - ASSERT(e_ == other.e_); - ASSERT(f_ >= other.f_); - f_ -= other.f_; - } - - // Returns a - b. - // The exponents of both numbers must be the same and this must be bigger - // than other. The result will not be normalized. - static DiyFp Minus(const DiyFp& a, const DiyFp& b) { - DiyFp result = a; - result.Subtract(b); - return result; - } - - - // this = this * other. - void Multiply(const DiyFp& other); - - // returns a * b; - static DiyFp Times(const DiyFp& a, const DiyFp& b) { - DiyFp result = a; - result.Multiply(b); - return result; - } - - void Normalize() { - ASSERT(f_ != 0); - uint64_t significand = f_; - int exponent = e_; - - // This method is mainly called for normalizing boundaries. In general - // boundaries need to be shifted by 10 bits. We thus optimize for this case. - const uint64_t k10MSBits = UINT64_2PART_C(0xFFC00000, 00000000); - while ((significand & k10MSBits) == 0) { - significand <<= 10; - exponent -= 10; - } - while ((significand & kUint64MSB) == 0) { - significand <<= 1; - exponent--; - } - f_ = significand; - e_ = exponent; - } - - static DiyFp Normalize(const DiyFp& a) { - DiyFp result = a; - result.Normalize(); - return result; - } - - uint64_t f() const { return f_; } - int e() const { return e_; } - - void set_f(uint64_t new_value) { f_ = new_value; } - void set_e(int new_value) { e_ = new_value; } - - private: - static const uint64_t kUint64MSB = UINT64_2PART_C(0x80000000, 00000000); - - uint64_t f_; - int e_; -}; - -} // namespace double_conversion - -// ICU PATCH: Close ICU namespace -U_NAMESPACE_END - -#endif // DOUBLE_CONVERSION_DIY_FP_H_ -#endif // ICU PATCH: close #if !UCONFIG_NO_FORMATTING |