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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;
| }
|
|
