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45 lines
712 B
C++
45 lines
712 B
C++
/*
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Bit manipulation of byte arrays
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Copyright 2018 Ahmet Inan <inan@aicodix.de>
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*/
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#ifndef BITMAN_HH
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#define BITMAN_HH
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namespace CODE {
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void xor_be_bit(uint8_t *buf, int pos, bool val)
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{
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buf[pos/8] ^= val<<(7-pos%8);
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}
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void xor_le_bit(uint8_t *buf, int pos, bool val)
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{
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buf[pos/8] ^= val<<(pos%8);
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}
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void set_be_bit(uint8_t *buf, int pos, bool val)
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{
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buf[pos/8] = (~(1<<(7-pos%8))&buf[pos/8])|(val<<(7-pos%8));
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}
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void set_le_bit(uint8_t *buf, int pos, bool val)
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{
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buf[pos/8] = (~(1<<(pos%8))&buf[pos/8])|(val<<(pos%8));
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}
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bool get_be_bit(const uint8_t *buf, int pos)
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{
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return (buf[pos/8]>>(7-pos%8))&1;
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}
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bool get_le_bit(const uint8_t *buf, int pos)
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{
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return (buf[pos/8]>>(pos%8))&1;
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}
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}
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#endif
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