Go中的“魔数”

src/math/bits.go:

const SmallestNormal = 2.2250738585072014e-308 // 2**-1022

Numeric limitations

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src/math/cbrt.go

const (
		B1             = 715094163                   // (682-0.03306235651)*2**20
		B2             = 696219795                   // (664-0.03306235651)*2**20
		C              = 5.42857142857142815906e-01  // 19/35     = 0x3FE15F15F15F15F1
		D              = -7.05306122448979611050e-01 // -864/1225 = 0xBFE691DE2532C834
		E              = 1.41428571428571436819e+00  // 99/70     = 0x3FF6A0EA0EA0EA0F
		F              = 1.60714285714285720630e+00  // 45/28     = 0x3FF9B6DB6DB6DB6E
		G              = 3.57142857142857150787e-01  // 5/14      = 0x3FD6DB6DB6DB6DB7
		SmallestNormal = 2.22507385850720138309e-308 // 2**-1022  = 0x0010000000000000
	)

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