void print_log2_hist()

in helpers/trace_helpers.c [914:951]

• 33 lines of code
• 11 McCabe index (conditional complexity)

void print_log2_hist(unsigned int *vals, int vals_size, const char *val_type)
{
	int stars_max = 40, idx_max = -1;
	unsigned int val, val_max = 0;
	unsigned long long low, high;
	int stars, width, i;

	for (i = 0; i < vals_size; i++) {
		val = vals[i];
		if (val > 0)
			idx_max = i;
		if (val > val_max)
			val_max = val;
	}

	if (idx_max < 0)
		return;

	printf("%*s%-*s : count    distribution\n", idx_max <= 32 ? 5 : 15, "",
		idx_max <= 32 ? 19 : 29, val_type);

	if (idx_max <= 32)
		stars = stars_max;
	else
		stars = stars_max / 2;

	for (i = 0; i <= idx_max; i++) {
		low = (1ULL << (i + 1)) >> 1;
		high = (1ULL << (i + 1)) - 1;
		if (low == high)
			low -= 1;
		val = vals[i];
		width = idx_max <= 32 ? 10 : 20;
		printf("%*lld -> %-*lld : %-8d |", width, low, width, high, val);
		print_stars(val, val_max, stars);
		printf("|\n");
	}
}