// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sha3

// This file provides functions for creating instances of the SHA-3
// and SHAKE hash functions, as well as utility functions for hashing
// bytes.

import (
	"hash"
)

// New224 creates a new SHA3-224 hash.

// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sha3

// spongeDirection indicates the direction bytes are flowing through the sponge.
type spongeDirection int

const (
	// spongeAbsorbing indicates that the sponge is absorbing input.
	spongeAbsorbing spongeDirection = iota

// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sha3

// This file defines the ShakeHash interface, and provides
// functions for creating SHAKE and cSHAKE instances, as well as utility
// functions for hashing bytes to arbitrary-length output.
//
//
// SHAKE implementation is based on FIPS PUB 202 [1]

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sync

import (
	"sync/atomic"
	"unsafe"
)

// Cond implements a condition variable, a rendezvous point
// for goroutines waiting for or announcing the occurrence
// of an event.
//
// Each Cond has an associated Locker L (often a [*Mutex] or [*RWMutex]),

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package time

func init() {
	// Force US/Pacific for time zone tests.
	ForceUSPacificForTesting()
}

func initTestingZone() {
	// For hermeticity, use only tzinfo source from the test's GOROOT,
	// not the system sources and not whatever GOROOT may happen to be

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package big_test

import (
	"fmt"
	"math"
	"math/big"
)

func ExampleFloat_Add() {
	// Operate on numbers of different precision.
	var x, y, z big.Float
	x.SetInt64(1000)          // x is automatically set to 64bit precision

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sync

import (
	"internal/race"
	"runtime"
	"sync/atomic"
	"unsafe"
)

// A Pool is a set of temporary objects that may be individually saved and
// retrieved.
//
// Any item stored in the Pool may be removed automatically at any time without

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sync

import (
	"internal/race"
	"sync/atomic"
	"unsafe"
)

// A WaitGroup waits for a collection of goroutines to finish.
// The main goroutine calls [WaitGroup.Add] to set the number of
// goroutines to wait for. Then each of the goroutines

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sha3

import (
	"crypto/subtle"
	"encoding/binary"
	"unsafe"

	"golang.org/x/sys/cpu"
)

// xorIn xors the bytes in buf into the state.
func xorIn(d *state, buf []byte) {
	if cpu.IsBigEndian {
		for i := 0; len(buf) >= 8; i++ {

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build (cgo || darwin) && !osusergo && unix && !android

package user

import (
	"fmt"
	"runtime"
	"strconv"
	"strings"
	"syscall"
	"unsafe"
)

func current() (*User, error) {
	return lookupUnixUid(syscall.Getuid())
}