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