You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
1.1 KiB
37 lines
1.1 KiB
package flate
|
|
|
|
const (
|
|
// Masks for shifts with register sizes of the shift value.
|
|
// This can be used to work around the x86 design of shifting by mod register size.
|
|
// It can be used when a variable shift is always smaller than the register size.
|
|
|
|
// reg8SizeMaskX - shift value is 8 bits, shifted is X
|
|
reg8SizeMask8 = 7
|
|
reg8SizeMask16 = 15
|
|
reg8SizeMask32 = 31
|
|
reg8SizeMask64 = 63
|
|
|
|
// reg16SizeMaskX - shift value is 16 bits, shifted is X
|
|
reg16SizeMask8 = reg8SizeMask8
|
|
reg16SizeMask16 = reg8SizeMask16
|
|
reg16SizeMask32 = reg8SizeMask32
|
|
reg16SizeMask64 = reg8SizeMask64
|
|
|
|
// reg32SizeMaskX - shift value is 32 bits, shifted is X
|
|
reg32SizeMask8 = reg8SizeMask8
|
|
reg32SizeMask16 = reg8SizeMask16
|
|
reg32SizeMask32 = reg8SizeMask32
|
|
reg32SizeMask64 = reg8SizeMask64
|
|
|
|
// reg64SizeMaskX - shift value is 64 bits, shifted is X
|
|
reg64SizeMask8 = reg8SizeMask8
|
|
reg64SizeMask16 = reg8SizeMask16
|
|
reg64SizeMask32 = reg8SizeMask32
|
|
reg64SizeMask64 = reg8SizeMask64
|
|
|
|
// regSizeMaskUintX - shift value is uint, shifted is X
|
|
regSizeMaskUint8 = reg8SizeMask8
|
|
regSizeMaskUint16 = reg8SizeMask16
|
|
regSizeMaskUint32 = reg8SizeMask32
|
|
regSizeMaskUint64 = reg8SizeMask64
|
|
)
|
|
|