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update kyaa

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This commit is contained in:
Connor Olding 2017-04-02 02:24:52 +00:00
parent cd18cf9120
commit 6c75485bbb
2 changed files with 10 additions and 3 deletions
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4
kyaa.h
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@ -1,6 +1,6 @@
/* kyaa.h - macro hacks for handling main() arguments
license: public domain or whatever.
documentation is kept separate in kyaa.md
This is free and unencumbered software released into the public domain.
Refer to kyaa.md for documentation.
*/
#pragma once

9
kyaa_extra.h
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@ -1,3 +1,8 @@
/* kyaa_extra.h - extensions to kyaa for parsing arguments.
This is free and unencumbered software released into the public domain.
Refer to kyaa.md for documentation.
*/
static char *kyaa_skip_spaces(char *str) {
/* iterates str to first non-space character according to the C locale */
while (*str != '\0') {
@ -173,7 +178,8 @@ static const char *kyaa_str_to_long(char *str, long *p_out) {
if (*str == '\0') return "no number given";
// TODO: comment on how we go towards negatives instead of positives
// NOTE: we actually subtract each digit from the result instead of summing.
// this lets us represent LONG_MIN without overflowing.
const char *err;
switch (base) {
case 2: { err = kyaa__base_2( &str, &out); } break;
@ -187,6 +193,7 @@ static const char *kyaa_str_to_long(char *str, long *p_out) {
str = kyaa_skip_spaces(str);
if (*str != '\0') return "unexpected character";
// NOTE: out is negative here; see above comment.
// assuming two's complement
if (!negated && out == LONG_MIN) return "out of range for long integer";
*p_out = negated ? out : -out;