summaryrefslogtreecommitdiffstats
path: root/intl/icu/source/i18n/double-conversion-cached-powers.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /intl/icu/source/i18n/double-conversion-cached-powers.h
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'intl/icu/source/i18n/double-conversion-cached-powers.h')
-rw-r--r--intl/icu/source/i18n/double-conversion-cached-powers.h82
1 files changed, 82 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/double-conversion-cached-powers.h b/intl/icu/source/i18n/double-conversion-cached-powers.h
new file mode 100644
index 0000000000..ade27baef8
--- /dev/null
+++ b/intl/icu/source/i18n/double-conversion-cached-powers.h
@@ -0,0 +1,82 @@
+// © 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