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Export of internal Abseil changes.

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ac7508120c60dfe689c40929e416b6a486f83ee3 by Gennadiy Rozental <rogeeff@google.com>:

Internal change

PiperOrigin-RevId: 206912089

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bd709faba88565367b6d337466e6456481b5f3e8 by Matt Calabrese <calabrese@google.com>:

Implement `std::experimental::is_detected` in type_traits internals and move `is_detected_convertible` from variant's internals to type_traits internals. This is in preparation of creating workarounds for broken standard traits.

PiperOrigin-RevId: 206825598

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0dbddea569370eb9b6348cee172d1874f9046eb4 by Jorg Brown <jorg@google.com>:

Support users who turn on floating-point conversion warnings

PiperOrigin-RevId: 206813209

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30991f757c8f0100584619d8a9c41897d029f112 by Jorg Brown <jorg@google.com>:

Speed up the absl::Seconds() function for floating-point values, roughly by 4.5x, since
we can take advantage of the fact that we're just taking a floating-point number and
splitting it into its integral and fractional parts.

PiperOrigin-RevId: 206806270

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6883837176838aa5a517e7a8cb4c99afd24c0d12 by Jon Cohen <cohenjon@google.com>:

Remove the DISABLE_INSTALL from absl_container.  It doesn't do anything.

PiperOrigin-RevId: 206802544

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92ab14fed06e6dd1f01a0284bd7f95d3e2c0c3d8 by Jon Cohen <cohenjon@google.com>:

Internal change

PiperOrigin-RevId: 206776244

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17b76c7f364ac562d9e0faeca0320f63aa3fdb85 by Jorg Brown <jorg@google.com>:

Fix absl/strings:numbers_test flakiness due to exceeding the 1-minute timeout

PiperOrigin-RevId: 206763175

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6637843f2e198b8efd90e5577fbc86bdea43b2cc by Abseil Team <absl-team@google.com>:

Adds templated allocator to absl::FixedArray with corresponding tests

PiperOrigin-RevId: 206354178

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bced22f81add828c9b4c60eb45554d36c22e2f96 by Abseil Team <absl-team@google.com>:

Adds templated allocator to absl::FixedArray with corresponding tests

PiperOrigin-RevId: 206347377

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75be14a71d2d5e335812d5b7670120271fb5bd79 by Abseil Team <absl-team@google.com>:

Internal change.

PiperOrigin-RevId: 206326935

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6929e43f4c7898b1f51e441911a19092a06fbf97 by Abseil Team <absl-team@google.com>:

Adds templated allocator to absl::FixedArray with corresponding tests

PiperOrigin-RevId: 206326368

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55ae34b75ff029eb267f9519e577bab8a575b487 by Abseil Team <absl-team@google.com>:

Internal change.

PiperOrigin-RevId: 206233448

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6950a8ccddf35d451eec2d02cd28a797c8b7cf6a by Matt Kulukundis <kfm@google.com>:

Internal change

PiperOrigin-RevId: 206035613
GitOrigin-RevId: ac7508120c60dfe689c40929e416b6a486f83ee3
Change-Id: I675605abbedab6b3ac9aa82195cbd059ff7c82b1
This commit is contained in:
Abseil Team 2018-08-01 04:34:12 -07:00 • committed by Derek Mauro
parent 9acad869d2
commit 2125e6444a
17 changed files with 1066 additions and 237 deletions
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97
absl/time/time.h
View file

@ -81,6 +81,7 @@ constexpr int64_t GetRepHi(Duration d);
constexpr uint32_t GetRepLo(Duration d);
constexpr Duration MakeDuration(int64_t hi, uint32_t lo);
constexpr Duration MakeDuration(int64_t hi, int64_t lo);
inline Duration MakePosDoubleDuration(double n);
constexpr int64_t kTicksPerNanosecond = 4;
constexpr int64_t kTicksPerSecond = 1000 * 1000 * 1000 * kTicksPerNanosecond;
template <std::intmax_t N>
@ -295,6 +296,39 @@ Duration Floor(Duration d, Duration unit);
// absl::Duration c = absl::Ceil(d, absl::Microseconds(1)); // 123457us
Duration Ceil(Duration d, Duration unit);
// InfiniteDuration()
//
// Returns an infinite `Duration`. To get a `Duration` representing negative
// infinity, use `-InfiniteDuration()`.
//
// Duration arithmetic overflows to +/- infinity and saturates. In general,
// arithmetic with `Duration` infinities is similar to IEEE 754 infinities
// except where IEEE 754 NaN would be involved, in which case +/-
// `InfiniteDuration()` is used in place of a "nan" Duration.
//
// Examples:
//
// constexpr absl::Duration inf = absl::InfiniteDuration();
// const absl::Duration d = ... any finite duration ...
//
// inf == inf + inf
// inf == inf + d
// inf == inf - inf
// -inf == d - inf
//
// inf == d * 1e100
// inf == inf / 2
// 0 == d / inf
// INT64_MAX == inf / d
//
// // Division by zero returns infinity, or INT64_MIN/MAX where appropriate.
// inf == d / 0
// INT64_MAX == d / absl::ZeroDuration()
//
// The examples involving the `/` operator above also apply to `IDivDuration()`
// and `FDivDuration()`.
constexpr Duration InfiniteDuration();
// Nanoseconds()
// Microseconds()
// Milliseconds()
@ -344,7 +378,13 @@ Duration Milliseconds(T n) {
}
template <typename T, time_internal::EnableIfFloat<T> = 0>
Duration Seconds(T n) {
return n * Seconds(1);
if (n >= 0) {
if (n >= std::numeric_limits<int64_t>::max()) return InfiniteDuration();
return time_internal::MakePosDoubleDuration(n);
} else {
if (n <= std::numeric_limits<int64_t>::min()) return -InfiniteDuration();
return -time_internal::MakePosDoubleDuration(-n);
}
}
template <typename T, time_internal::EnableIfFloat<T> = 0>
Duration Minutes(T n) {
@ -439,39 +479,6 @@ std::chrono::seconds ToChronoSeconds(Duration d);
std::chrono::minutes ToChronoMinutes(Duration d);
std::chrono::hours ToChronoHours(Duration d);
// InfiniteDuration()
//
// Returns an infinite `Duration`. To get a `Duration` representing negative
// infinity, use `-InfiniteDuration()`.
//
// Duration arithmetic overflows to +/- infinity and saturates. In general,
// arithmetic with `Duration` infinities is similar to IEEE 754 infinities
// except where IEEE 754 NaN would be involved, in which case +/-
// `InfiniteDuration()` is used in place of a "nan" Duration.
//
// Examples:
//
// constexpr absl::Duration inf = absl::InfiniteDuration();
// const absl::Duration d = ... any finite duration ...
//
// inf == inf + inf
// inf == inf + d
// inf == inf - inf
// -inf == d - inf
//
// inf == d * 1e100
// inf == inf / 2
// 0 == d / inf
// INT64_MAX == inf / d
//
// // Division by zero returns infinity, or INT64_MIN/MAX where appropriate.
// inf == d / 0
// INT64_MAX == d / absl::ZeroDuration()
//
// The examples involving the `/` operator above also apply to `IDivDuration()`
// and `FDivDuration()`.
constexpr Duration InfiniteDuration();
// FormatDuration()
//
// Returns a std::string representing the duration in the form "72h3m0.5s".
@ -492,12 +499,9 @@ inline std::ostream& operator<<(std::ostream& os, Duration d) {
// `ZeroDuration()`. Parses "inf" and "-inf" as +/- `InfiniteDuration()`.
bool ParseDuration(const std::string& dur_string, Duration* d);
// ParseFlag()
//
// Support for flag values of type Duration. Duration flags must be specified
// in a format that is valid input for absl::ParseDuration().
bool ParseFlag(const std::string& text, Duration* dst, std::string* error);
// UnparseFlag()
//
std::string UnparseFlag(Duration d);
// Time
@ -991,9 +995,6 @@ bool ParseTime(const std::string& format, const std::string& input, Time* time,
bool ParseTime(const std::string& format, const std::string& input, TimeZone tz,
Time* time, std::string* err);
// ParseFlag()
// UnparseFlag()
//
// Support for flag values of type Time. Time flags must be specified in a
// format that matches absl::RFC3339_full. For example:
//
@ -1114,6 +1115,18 @@ constexpr Duration MakeDuration(int64_t hi, int64_t lo) {
return MakeDuration(hi, static_cast<uint32_t>(lo));
}
// Make a Duration value from a floating-point number, as long as that number
// is in the range [ 0 .. numeric_limits<int64_t>::max ), that is, as long as
// it's positive and can be converted to int64_t without risk of UB.
inline Duration MakePosDoubleDuration(double n) {
const int64_t int_secs = static_cast<int64_t>(n);
const uint32_t ticks =
static_cast<uint32_t>((n - int_secs) * kTicksPerSecond + 0.5);
return ticks < kTicksPerSecond
? MakeDuration(int_secs, ticks)
: MakeDuration(int_secs + 1, ticks - kTicksPerSecond);
}
// Creates a normalized Duration from an almost-normalized (sec,ticks)
// pair. sec may be positive or negative. ticks must be in the range
// -kTicksPerSecond < *ticks < kTicksPerSecond. If ticks is negative it