go/src/internal/strconv/deps.go

// Copyright 2025 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 strconv

import "unsafe"

// Implementations to avoid importing other dependencies.

// package math

func float64frombits(b uint64) float64 { return *(*float64)(unsafe.Pointer(&b)) }
func float32frombits(b uint32) float32 { return *(*float32)(unsafe.Pointer(&b)) }
func float64bits(f float64) uint64     { return *(*uint64)(unsafe.Pointer(&f)) }
func float32bits(f float32) uint32     { return *(*uint32)(unsafe.Pointer(&f)) }

func inf(sign int) float64 {
	var v uint64
	if sign >= 0 {
		v = 0x7FF0000000000000
	} else {
		v = 0xFFF0000000000000
	}
	return float64frombits(v)
}

func isNaN(f float64) (is bool) { return f != f }

func nan() float64 { return float64frombits(0x7FF8000000000001) }