// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package math

// Logb returns the binary exponent of x.
//
// Special cases are:
//
//	Logb(±Inf) = +Inf
//	Logb(0) = -Inf
//	Logb(NaN) = NaN
func Logb(x float64) float64 {
	// special cases
	switch {
	case x == 0:
		return Inf(-1)
	case IsInf(x, 0):
		return Inf(1)
	case IsNaN(x):

	for i := 0; i < len(vf); i++ {
		if f := Logb(vf[i]); logb[i] != f {
			t.Errorf("Logb(%g) = %g, want %g", vf[i], f, logb[i])
		}
	}
	for i := 0; i < len(vflogbSC); i++ {
		if f := Logb(vflogbSC[i]); !alike(logbSC[i], f) {
			t.Errorf("Logb(%g) = %g, want %g", vflogbSC[i], f, logbSC[i])
		}
	}
	for i := 0; i < len(vffrexpBC); i++ {
		if f := Logb(vffrexpBC[i]); !alike(logbBC[i], f) {

		{"Ln10", Const, 0},
		{"Ln2", Const, 0},
		{"Log", Func, 0},
		{"Log10", Func, 0},
		{"Log10E", Const, 0},
		{"Log1p", Func, 0},
		{"Log2", Func, 0},
		{"Log2E", Const, 0},
		{"Logb", Func, 0},
		{"Max", Func, 0},
		{"MaxFloat32", Const, 0},
		{"MaxFloat64", Const, 0},
		{"MaxInt", Const, 17},
		{"MaxInt16", Const, 0},
		{"MaxInt32", Const, 0},
		{"MaxInt64", Const, 0},

        "node": ">= 8"
      }
    },
    "node_modules/@nodelib/fs.walk": {
      "version": "1.2.8",
      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.8.tgz",
      "integrity": "sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg==",
      "dev": true,
      "dependencies": {
        "@nodelib/fs.scandir": "2.1.5",
        "fastq": "^1.6.0"
      },

pkg math, func Lgamma(float64) (float64, int)
pkg math, func Log(float64) float64
pkg math, func Log10(float64) float64
pkg math, func Log1p(float64) float64
pkg math, func Log2(float64) float64
pkg math, func Logb(float64) float64
pkg math, func Max(float64, float64) float64
pkg math, func Min(float64, float64) float64
pkg math, func Mod(float64, float64) float64
pkg math, func Modf(float64) (float64, float64)