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Linux/tools/perf/tests/unit_number__scnprintf.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 #include <inttypes.h>
  3 #include <linux/compiler.h>
  4 #include <linux/types.h>
  5 #include <string.h>
  6 #include "tests.h"
  7 #include "units.h"
  8 #include "debug.h"
  9 
 10 static int test__unit_number__scnprint(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
 11 {
 12         struct {
 13                 u64              n;
 14                 const char      *str;
 15         } test[] = {
 16                 { 1,                    "1B"    },
 17                 { 10*1024,              "10K"   },
 18                 { 20*1024*1024,         "20M"   },
 19                 { 30*1024*1024*1024ULL, "30G"   },
 20                 { 0,                    "0B"    },
 21                 { 0,                    NULL    },
 22         };
 23         unsigned i = 0;
 24 
 25         while (test[i].str) {
 26                 char buf[100];
 27 
 28                 unit_number__scnprintf(buf, sizeof(buf), test[i].n);
 29 
 30                 pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n",
 31                          test[i].n, test[i].str, buf);
 32 
 33                 if (strcmp(test[i].str, buf))
 34                         return TEST_FAIL;
 35 
 36                 i++;
 37         }
 38 
 39         return TEST_OK;
 40 }
 41 
 42 DEFINE_SUITE("unit_number__scnprintf", unit_number__scnprint);
 43 

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