17 lines
846 B
C
17 lines
846 B
C
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#include "common.h"
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bool common_bit_set(long long value, byte position) { return value & (1L << position); }
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// I could do this through non-void methods with returns in one copy,
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// but this variant is slightly faster, and needs less typing in client code
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#define M_common(SUFFIX, TYPE) \
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void common_set_bit##SUFFIX(TYPE *variable, byte position) { *variable |= 1L << position; } \
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void common_unset_bit##SUFFIX(TYPE *variable, byte position) { *variable &= ~(1L << position); } \
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void common_toggle_bit##SUFFIX(TYPE *variable, byte position) { *variable ^= 1L << position; } \
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void common_modify_bit##SUFFIX(TYPE *variable, byte position, bool set) \
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{ set ? common_set_bit##SUFFIX(variable, position) : common_unset_bit##SUFFIX(variable, position); }
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M_common(b, byte)
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M_common(w, word)
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M_common(d, dword)
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