HISTCOUNTER
p->lowpc = ROUNDDOWN(lowpc, HISTFRACTION * sizeof(HISTCOUNTER));
p->highpc = ROUNDUP(highpc, HISTFRACTION * sizeof(HISTCOUNTER));
HISTCOUNTER *kcount;
HISTCOUNTER *cputime_count;
HISTCOUNTER *mcount_count;
HISTCOUNTER *mexitcount_count;
#define HISTFRACTION (FUNCTION_ALIGNMENT / sizeof(HISTCOUNTER) == 0 \
? 1 : FUNCTION_ALIGNMENT / sizeof(HISTCOUNTER))