common_defs.h

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#ifndef COMMON_DEFS_H
#define COMMON_DEFS_H
 
// todo: axe this file. common/utils/ contains modernized implementations
 
#include <stdint.h>
 
// Base-2 logarithm that rounds down
static inline uint32_t LOG2_DOWN(uint32_t x) {
    return 31U - (uint32_t)__builtin_clz(x);
}
 
// Base-2 logarithm that rounds up
static inline uint32_t LOG2_UP(uint32_t x) {
    return LOG2_DOWN(x - 1) + 1;
}
 
static inline uint32_t ROUNDDOWN(uint32_t a, uint32_t n) {
    return a - (a % n);
}
 
// Round up to the nearest multiple of n
static inline uint32_t ROUNDUP(uint32_t a, uint32_t n) {
    return ROUNDDOWN(a + n - 1, n);
}
 
#endif // COMMON_DEFS_H