mirror of https://github.com/nmlgc/ReC98.git
52 lines
867 B
C
52 lines
867 B
C
/* ReC98
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* -----
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* Main include file
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*/
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#ifndef REC98_H
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#define REC98_H
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#include <stddef.h>
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#include "platform.h"
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#include "pc98.h"
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#include "planar.h"
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// Macros
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// ------
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#define CLAMP_INC(val, max) \
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(val)++; \
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if((val) > (max)) { \
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(val) = (max); \
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}
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#define CLAMP_DEC(val, min) \
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(val)--; \
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if((val) < (min)) { \
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(val) = (min); \
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}
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#ifdef __cplusplus
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// This is, in fact, the only way to circumvent 16-bit promotion inside
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// comparisons between two 8-bit values in C++. I kid you not.
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static inline char ring_min() {
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return 0;
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}
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#else
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#define ring_min() 0
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#endif
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#define RING_INC(val, ring_end) \
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(val)++; \
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if((val) > (ring_end)) { \
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(val) = 0; \
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}
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#define RING_DEC(val, ring_end) \
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(val)--; \
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if(val < ring_min()) { \
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(val) = ring_end; \
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}
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// ------
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#endif /* REC98_H */
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