cosmopolitan/tool/plinko/lib/histo.h
2024-08-04 12:52:25 -07:00

18 lines
542 B
C

#ifndef COSMOPOLITAN_TOOL_PLINKO_LIB_HISTO_H_
#define COSMOPOLITAN_TOOL_PLINKO_LIB_HISTO_H_
#include "libc/intrin/bsr.h"
#include "libc/macros.h"
COSMOPOLITAN_C_START_
#define HISTO(H, X) \
do { \
uint64_t x_ = X; \
x_ = x_ ? bsrl(x_) + 1 : x_; \
++H[MIN(x_, ARRAYLEN(H) - 1)]; \
} while (0)
void PrintHistogram(int, const char *, const long *, size_t);
long GetLongSum(const long *, size_t);
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_TOOL_PLINKO_LIB_HISTO_H_ */