| // © 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_CACHED_POWERS_H_ |
| #define DOUBLE_CONVERSION_CACHED_POWERS_H_ |
| |
| // ICU PATCH: Customize header file paths for ICU. |
| |
| #include "double-conversion-diy-fp.h" |
| |
| // ICU PATCH: Wrap in ICU namespace |
| U_NAMESPACE_BEGIN |
| |
| namespace double_conversion { |
| |
| namespace PowersOfTenCache { |
| |
| // Not all powers of ten are cached. The decimal exponent of two neighboring |
| // cached numbers will differ by kDecimalExponentDistance. |
| static const int kDecimalExponentDistance = 8; |
| |
| static const int kMinDecimalExponent = -348; |
| static const int kMaxDecimalExponent = 340; |
| |
| // Returns a cached power-of-ten with a binary exponent in the range |
| // [min_exponent; max_exponent] (boundaries included). |
| void GetCachedPowerForBinaryExponentRange(int min_exponent, |
| int max_exponent, |
| DiyFp* power, |
| int* decimal_exponent); |
| |
| // Returns a cached power of ten x ~= 10^k such that |
| // k <= decimal_exponent < k + kCachedPowersDecimalDistance. |
| // The given decimal_exponent must satisfy |
| // kMinDecimalExponent <= requested_exponent, and |
| // requested_exponent < kMaxDecimalExponent + kDecimalExponentDistance. |
| void GetCachedPowerForDecimalExponent(int requested_exponent, |
| DiyFp* power, |
| int* found_exponent); |
| |
| } // namespace PowersOfTenCache |
| |
| } // namespace double_conversion |
| |
| // ICU PATCH: Close ICU namespace |
| U_NAMESPACE_END |
| |
| #endif // DOUBLE_CONVERSION_CACHED_POWERS_H_ |
| #endif // ICU PATCH: close #if !UCONFIG_NO_FORMATTING |
