a4506cd3f2
Also split v8-core independent methods from checks.h to base/logging.h and merge v8checks with the rest of checks. The CPU::FlushICache method is moved to CpuFeatures::FlushICache RoundUp and related methods are moved to base/macros.h Remove all layering violations from src/libplatform BUG=none R=jkummerow@chromium.org LOG=n Review URL: https://codereview.chromium.org/358363002 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
// Copyright 2010 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_CACHED_POWERS_H_
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#define V8_CACHED_POWERS_H_
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#include "src/base/logging.h"
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#include "src/diy-fp.h"
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namespace v8 {
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namespace internal {
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class PowersOfTenCache {
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public:
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// Not all powers of ten are cached. The decimal exponent of two neighboring
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// cached numbers will differ by kDecimalExponentDistance.
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static const int kDecimalExponentDistance;
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static const int kMinDecimalExponent;
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static const int kMaxDecimalExponent;
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// Returns a cached power-of-ten with a binary exponent in the range
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// [min_exponent; max_exponent] (boundaries included).
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static void GetCachedPowerForBinaryExponentRange(int min_exponent,
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int max_exponent,
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DiyFp* power,
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int* decimal_exponent);
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// Returns a cached power of ten x ~= 10^k such that
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// k <= decimal_exponent < k + kCachedPowersDecimalDistance.
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// The given decimal_exponent must satisfy
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// kMinDecimalExponent <= requested_exponent, and
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// requested_exponent < kMaxDecimalExponent + kDecimalExponentDistance.
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static void GetCachedPowerForDecimalExponent(int requested_exponent,
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DiyFp* power,
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int* found_exponent);
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};
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} } // namespace v8::internal
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#endif // V8_CACHED_POWERS_H_
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