78 lines
1.1 KiB
C
78 lines
1.1 KiB
C
#include <stdio.h>
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#include <float.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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double min = 90000;
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double max = 3000000;
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int parse_double(const char *str, double *res) {
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char *ptr;
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*res = strtod(str, &ptr);
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if (*ptr)
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return 0;
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return 1;
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}
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void print(double diff, double val) {
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int lvl = (int)round((val - min + 1) / diff * 7);
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if (lvl < 0)
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lvl = 0;
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else if (lvl > 7)
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lvl = 7;
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putchar('\xe2');
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putchar('\x96');
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putchar('\x81' + lvl);
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}
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int main(int argc, char **argv) {
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argv++;
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argc--;
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if (argc == 0) {
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fprintf(stderr, "spark: missing operands\n");
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return 1;
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}
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size_t as = argc / 2;
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double *a = malloc((as + 1) * sizeof(double));
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if (a == NULL)
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return 1;
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size_t j = 0;
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for (size_t i = 0; i < as; i++) {
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double val = 0;
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if (!parse_double(argv[j], &val)) {
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j++;
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continue;
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}
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double val2 = 0;
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if (!parse_double(argv[j + 1], &val)) {
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j++;
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continue;
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}
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a[i] = (val + val2) / 2;
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j++;
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}
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double diff = max - min + 1;
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if (diff < 1)
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diff = 1;
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for (size_t i = 0; i < as; i++)
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print(diff, a[i]);
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putchar('\r');
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free(a);
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return 0;
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}
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