tools/perf/tests/unit_number__scnprintf.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <inttypes.h>
   3 #include <linux/compiler.h>
   4 #include <linux/types.h>
   5 #include "tests.h"
   6 #include "units.h"
   7 #include "debug.h"
   8
   9 int test__unit_number__scnprint(struct test *t __maybe_unused, int subtest __maybe_unused)
  10 {
  11         struct {
  12                 u64              n;
  13                 const char      *str;
  14         } test[] = {
  15                 { 1,                    "1B"    },
  16                 { 10*1024,              "10K"   },
  17                 { 20*1024*1024,         "20M"   },
  18                 { 30*1024*1024*1024ULL, "30G"   },
  19                 { 0,                    "0B"    },
  20                 { 0,                    NULL    },
  21         };
  22         unsigned i = 0;
  23
  24         while (test[i].str) {
  25                 char buf[100];
  26
  27                 unit_number__scnprintf(buf, sizeof(buf), test[i].n);
  28
  29                 pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n",
  30                          test[i].n, test[i].str, buf);
  31
  32                 if (strcmp(test[i].str, buf))
  33                         return TEST_FAIL;
  34
  35                 i++;
  36         }
  37
  38         return TEST_OK;
  39 }