Source file src/github.com/klauspost/compress/flate/regmask_other.go

Documentation: github.com/klauspost/compress/flate

     1  //go:build !amd64
     2  // +build !amd64
     3  
     4  package flate
     5  
     6  const (
     7  	// Masks for shifts with register sizes of the shift value.
     8  	// This can be used to work around the x86 design of shifting by mod register size.
     9  	// It can be used when a variable shift is always smaller than the register size.
    10  
    11  	// reg8SizeMaskX - shift value is 8 bits, shifted is X
    12  	reg8SizeMask8  = 0xff
    13  	reg8SizeMask16 = 0xff
    14  	reg8SizeMask32 = 0xff
    15  	reg8SizeMask64 = 0xff
    16  
    17  	// reg16SizeMaskX - shift value is 16 bits, shifted is X
    18  	reg16SizeMask8  = 0xffff
    19  	reg16SizeMask16 = 0xffff
    20  	reg16SizeMask32 = 0xffff
    21  	reg16SizeMask64 = 0xffff
    22  
    23  	// reg32SizeMaskX - shift value is 32 bits, shifted is X
    24  	reg32SizeMask8  = 0xffffffff
    25  	reg32SizeMask16 = 0xffffffff
    26  	reg32SizeMask32 = 0xffffffff
    27  	reg32SizeMask64 = 0xffffffff
    28  
    29  	// reg64SizeMaskX - shift value is 64 bits, shifted is X
    30  	reg64SizeMask8  = 0xffffffffffffffff
    31  	reg64SizeMask16 = 0xffffffffffffffff
    32  	reg64SizeMask32 = 0xffffffffffffffff
    33  	reg64SizeMask64 = 0xffffffffffffffff
    34  
    35  	// regSizeMaskUintX - shift value is uint, shifted is X
    36  	regSizeMaskUint8  = ^uint(0)
    37  	regSizeMaskUint16 = ^uint(0)
    38  	regSizeMaskUint32 = ^uint(0)
    39  	regSizeMaskUint64 = ^uint(0)
    40  )
    41  

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