94 lines
2.4 KiB
V
94 lines
2.4 KiB
V
// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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module binary
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// Little Endian
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pub fn little_endian_endian_u16(b []byte) u16 {
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_ := b[1] // bounds check
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return u16(b[0]) | u16(u16(b[1])<<u16(8))
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}
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pub fn little_endian_put_u16(b mut []byte, v u16) {
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_ := b[1] // bounds check
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b[0] = byte(v)
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b[1] = byte(v >> u16(8))
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}
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pub fn little_endian_u32(b []byte) u32 {
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_ := b[3] // bounds check
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return u32(b[0]) | u32(u32(b[1])<<u32(8)) | u32(u32(b[2])<<u32(16)) | u32(u32(b[3])<<u32(24))
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}
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pub fn little_endian_put_u32(b mut []byte, v u32) {
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_ := b[3] // bounds check
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b[0] = byte(v)
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b[1] = byte(v >> u32(8))
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b[2] = byte(v >> u32(16))
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b[3] = byte(v >> u32(24))
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}
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pub fn little_endian_u64(b mut []byte) u64 {
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_ := b[7] // bounds check
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return u64(b[0]) | u64(u64(b[1])<<u64(8)) | u64(u64(b[2])<<u64(16)) | u64(u64(b[3])<<u64(24)) |
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u64(u64(b[4])<<u64(32)) | u64(u64(b[5])<<u64(40)) | u64(u64(b[6])<<u64(48)) | u64(u64(b[7])<<u64(56))
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}
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pub fn little_endian_put_u64(b mut []byte, v u64) {
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_ := b[7] // bounds check
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b[0] = byte(v)
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b[1] = byte(v >> u64(8))
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b[2] = byte(v >> u64(16))
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b[3] = byte(v >> u64(24))
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b[4] = byte(v >> u64(32))
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b[5] = byte(v >> u64(40))
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b[6] = byte(v >> u64(48))
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b[7] = byte(v >> u64(56))
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}
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// Big Endian
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pub fn big_endian_u16(b []byte) u16 {
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_ := b[1] // bounds check
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return u16(b[1]) | u16(u16(b[0])<<u16(8))
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}
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pub fn big_endian_put_u16(b mut []byte, v u16) {
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_ := b[1] // bounds check
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b[0] = byte(v >> u16(8))
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b[1] = byte(v)
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}
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pub fn big_endian_u32(b []byte) u32 {
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_ := b[3] // bounds check
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return u32(b[3]) | u32(u32(b[2])<<u32(8)) | u32(u32(b[1])<<u32(16)) | u32(u32(b[0])<<u32(24))
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}
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pub fn big_endian_put_u32(b mut []byte, v u32) {
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_ := b[3] // bounds check
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b[0] = byte(v >> u32(24))
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b[1] = byte(v >> u32(16))
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b[2] = byte(v >> u32(8))
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b[3] = byte(v)
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}
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pub fn big_endian_u64(b []byte) u64 {
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_ := b[7] // bounds check
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return u64(b[7]) | u64(u64(b[6])<<u64(8)) | u64(u64(b[5])<<u64(16)) | u64(u64(b[4])<<u64(24)) |
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u64(u64(b[3])<<u64(32)) | u64(u64(b[2])<<u64(40)) | u64(u64(b[1])<<u64(48)) | u64(u64(b[0])<<u64(56))
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}
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pub fn big_endian_put_u64(b mut []byte, v u64) {
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_ := b[7] // bounds check
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b[0] = byte(v >> u64(56))
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b[1] = byte(v >> u64(48))
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b[2] = byte(v >> u64(40))
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b[3] = byte(v >> u64(32))
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b[4] = byte(v >> u64(24))
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b[5] = byte(v >> u64(16))
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b[6] = byte(v >> u64(8))
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b[7] = byte(v)
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}
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