Bits.h

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#ifndef COSA_BITS_H
#define COSA_BITS_H

#define bit_mask(b) (1 << (b))
#define bit_mask_get(p,m) ((p) & (m))
#define bit_mask_set(p,m) ((p) |= (m))
#define bit_mask_clear(p,m) ((p) &= ~(m))
#define bit_mask_toggle(p,m) ((p) ^= (m))
#define bit_mask_write(c,p,m) (c ? bit_mask_set(p,m) : bit_mask_clear(p,m))

#define bit_get(p,b) ((p) & bit_mask(b))
#define bit_set(p,b) ((p) |= bit_mask(b))
#define bit_clear(p,b) ((p) &= ~bit_mask(b))
#define bit_toggle(p,b) ((p) ^= bit_mask(b))
#define bit_write(c,p,b) (c ? bit_set(p,b) : bit_clear(p,b))

#define bit_field_set(p,m,v) ((p) = ((p) & ~(m)) | ((v) & (m)))
#endif