arm9/source/types/circbuf.h


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#ifndef CIRCBUF_H_
    #define CIRCBUF_H_

    #include "../bang.h"


    // A 256-byte circular buffer.
    typedef struct {
        u8 mem[256];
        u8 front;      // start of buffer, read from here up to back
        u8 back;       // end of buffer, write past here up to front
    } CircBuf;

    // Methods.
    u8 circbuf_read(CircBuf *buf);
    void circbuf_write(CircBuf *buf, u8 byte);
    void circbuf_clear(CircBuf *buf);
#endif