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- #include <stdio.h>
- #include <limits.h>
- #include <string.h>
- #include <stdlib.h>
- #include "spark.h"
- #include "stat.h"
- #define SPARK_SHIFT 8
- /* Print spark lines on outf for numval values in val. */
- int print_spark(char *bf, int size, unsigned long *val, int numval)
- {
- static const char *ticks[NUM_SPARKS] = {
- "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█"
- };
- int i, printed = 0;
- unsigned long min = ULONG_MAX, max = 0, f;
- for (i = 0; i < numval; i++) {
- if (val[i] < min)
- min = val[i];
- if (val[i] > max)
- max = val[i];
- }
- f = ((max - min) << SPARK_SHIFT) / (NUM_SPARKS - 1);
- if (f < 1)
- f = 1;
- for (i = 0; i < numval; i++) {
- printed += scnprintf(bf + printed, size - printed, "%s",
- ticks[((val[i] - min) << SPARK_SHIFT) / f]);
- }
- return printed;
- }
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