/* * SPDX-License-Identifier: GPL-2.0-or-later * * This testing program makes sure the byteswap functions work * * Copyright (C) 2000 by Theodore Ts'o. * Copyright (C) 2008 Karel Zak <kzak@redhat.com> */ #include <stdio.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <time.h> #include <sys/stat.h> #include <sys/types.h> #include <errno.h> #include <inttypes.h> #include "bitops.h" static uint16_t ary16[] = { 0x0001, 0x0100, 0x1234, 0x3412, 0xff00, 0x00ff, 0x4000, 0x0040, 0xfeff, 0xfffe, 0x0000, 0x0000 }; static uint32_t ary32[] = { 0x00000001, 0x01000000, 0x80000000, 0x00000080, 0x12345678, 0x78563412, 0xffff0000, 0x0000ffff, 0x00ff0000, 0x0000ff00, 0xff000000, 0x000000ff, 0x00000000, 0x00000000 }; static uint64_t ary64[] = { 0x0000000000000001, 0x0100000000000000, 0x8000000000000000, 0x0000000000000080, 0x1234567812345678, 0x7856341278563412, 0xffffffff00000000, 0x00000000ffffffff, 0x00ff000000000000, 0x000000000000ff00, 0xff00000000000000, 0x00000000000000ff, 0x0000000000000000, 0x0000000000000000 }; int main(void) { int i; int errors = 0; printf("Testing swab16\n"); i=0; do { printf("swab16(0x%04"PRIx16") = 0x%04"PRIx16"\n", ary16[i], swab16(ary16[i])); if (swab16(ary16[i]) != ary16[i+1]) { printf("Error!!! %04"PRIx16" != %04"PRIx16"\n", swab16(ary16[i]), ary16[i+1]); errors++; } if (swab16(ary16[i+1]) != ary16[i]) { printf("Error!!! %04"PRIx16" != %04"PRIx16"\n", swab16(ary16[i+1]), ary16[i]); errors++; } i += 2; } while (ary16[i] != 0); printf("Testing swab32\n"); i = 0; do { printf("swab32(0x%08"PRIx32") = 0x%08"PRIx32"\n", ary32[i], swab32(ary32[i])); if (swab32(ary32[i]) != ary32[i+1]) { printf("Error!!! %04"PRIx32" != %04"PRIx32"\n", swab32(ary32[i]), ary32[i+1]); errors++; } if (swab32(ary32[i+1]) != ary32[i]) { printf("Error!!! %04"PRIx32" != %04"PRIx32"\n", swab32(ary32[i+1]), ary32[i]); errors++; } i += 2; } while (ary32[i] != 0); printf("Testing swab64\n"); i = 0; do { printf("swab64(0x%016"PRIx64") = 0x%016"PRIx64"\n", ary64[i], swab64(ary64[i])); if (swab64(ary64[i]) != ary64[i+1]) { printf("Error!!! %016"PRIx64" != %016"PRIx64"\n", swab64(ary64[i]), ary64[i+1]); errors++; } if (swab64(ary64[i+1]) != ary64[i]) { printf("Error!!! %016"PRIx64" != %016"PRIx64"\n", swab64(ary64[i+1]), ary64[i]); errors++; } i += 2; } while (ary64[i] != 0); if (!errors) printf("No errors found in the byteswap implementation\n"); return errors; }