source:
buchla-68k/libcio/atoi.c@
6099cac
Last change on this file since 6099cac was 8973acd, checked in by , 7 years ago | |
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File size: 535 bytes |
Rev | Line | |
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[f40a309] | 1 | /* |
2 | ============================================================================= | |
3 | atoi.c -- ascii to integer conversion | |
4 | Version 4 -- 1987-07-09 -- D.N. Lynx Crowe | |
5 | ============================================================================= | |
6 | */ | |
7 | ||
[b28a12e] | 8 | #include "ram.h" |
[f40a309] | 9 | |
[7258c6a] | 10 | int16_t atoi(int8_t *cp) |
[f40a309] | 11 | { |
[8973acd] | 12 | register int16_t i; |
[7258c6a] | 13 | register int16_t sign; |
[f40a309] | 14 | |
15 | sign = 0; | |
16 | ||
17 | if ( *cp EQ '-' ) { | |
18 | ||
19 | ++cp; | |
20 | sign = 1; | |
21 | ||
22 | } else { | |
23 | ||
24 | if (*cp EQ '+') | |
25 | ++cp; | |
26 | } | |
27 | ||
28 | for (i = 0; isdigit(*cp); ) | |
29 | i = i * 10 + (0x7F & *cp++) - '0'; | |
30 | ||
31 | return(sign ? -i : i); | |
32 | } | |
33 | ||
[6262b5c] | 34 |
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