Last change
on this file since 66b48e7 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 7 years ago |
Imported original source code.
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File size:
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1 | /*
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2 | =============================================================================
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3 | atol.c -- ascii to long conversion
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4 | Version 3 -- 1987-06-29 -- D.N. Lynx Crowe
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5 | =============================================================================
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6 | */
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7 |
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8 | #include "stddefs.h"
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9 | #include "ctype.h"
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10 |
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11 | long
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12 | atol(cp)
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13 | register char *cp;
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14 | {
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15 | register long n;
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16 | register short sign;
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17 |
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18 | sign = 0;
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19 |
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20 | if (*cp EQ '-') {
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21 |
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22 | ++cp;
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23 | sign = 1;
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24 |
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25 | } else {
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26 |
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27 | if (*cp EQ '+')
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28 | ++cp;
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29 | }
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30 |
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31 | for (n = 0; isdigit(*cp); )
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32 | n = n * 10 + *cp++ - '0';
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33 |
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34 | return(sign ? -n : n);
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35 | }
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