32 lines
828 B
Diff
32 lines
828 B
Diff
SPDX-FileCopyrightText: 2023 Paul Dersey <pdersey@gmail.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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Modify makecrc so that it outputs C code to a file that
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can be appended to util.c
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--- sample/makecrc.c
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+++ sample/makecrc.c
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@@ -47,7 +47,9 @@ main()
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e |= 1L << (31 - p[i]);
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/* Compute and print table of CRC's, five per line */
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- printf(" 0x00000000L");
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+ FILE *output = fopen("crc.c", "w");
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+ fprintf(output, "ulg crc_32_tab[] = {\n");
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+ fprintf(output," 0x00000000L");
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for (i = 1; i < 256; i++)
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{
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c = i;
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@@ -56,8 +58,8 @@ main()
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*/
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for (k = 8; k; k--)
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c = c & 1 ? (c >> 1) ^ e : c >> 1;
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- printf(i % 5 ? ", 0x%08lxL" : ",\n 0x%08lxL", c);
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+ fprintf(output, i % 5 ? ", 0x%08lxL" : ",\n 0x%08lxL", c);
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}
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- putchar('\n');
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+ fprintf(output,"\n};\n");
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return 0;
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}
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