tools/perf/tests/unit_number__scnprintf.c

   1 #include <inttypes.h>
   2 #include <linux/compiler.h>
   3 #include <linux/types.h>
   4 #include "tests.h"
   5 #include "units.h"
   6 #include "debug.h"
   7
   8 int test__unit_number__scnprint(struct test *t __maybe_unused, int subtest __maybe_unused)
   9 {
  10         struct {
  11                 u64              n;
  12                 const char      *str;
  13         } test[] = {
  14                 { 1,                    "1B"    },
  15                 { 10*1024,              "10K"   },
  16                 { 20*1024*1024,         "20M"   },
  17                 { 30*1024*1024*1024ULL, "30G"   },
  18                 { 0,                    "0B"    },
  19                 { 0,                    NULL    },
  20         };
  21         unsigned i = 0;
  22
  23         while (test[i].str) {
  24                 char buf[100];
  25
  26                 unit_number__scnprintf(buf, sizeof(buf), test[i].n);
  27
  28                 pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n",
  29                          test[i].n, test[i].str, buf);
  30
  31                 if (strcmp(test[i].str, buf))
  32                         return TEST_FAIL;
  33
  34                 i++;
  35         }
  36
  37         return TEST_OK;
  38 }