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simplify booleans when <stdbool.h> header file is missing

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Landon Curt Noll
2023-08-19 22:02:16 -07:00
parent 3c18e6e25b
commit b0aa949ad5
1 changed files with 7 additions and 11 deletions
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18
bool.h
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@@ -39,29 +39,25 @@
/* /*
* standard truth :-) * standard truth :-)
*/ */
#if !defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) #if !defined(HAVE_STDBOOL_H)
/* have a C99 compiler - we should have <stdbool.h>, true, false */ /* fake a <stdbool.h> header file */
typedef unsigned char bool; /* fake boolean value */
#elif !defined(__cplusplus)
/* do not have a C99 compiler - fake a <stdbool.h> header file */
typedef unsigned char bool;
#undef true #undef true
#define true ((bool)(1)) #define true ((bool)(1))
#undef false #undef false
#define false ((bool)(0)) #define false ((bool)(0))
#endif /* standard truth :-) */ #endif /* !HAVE_STDBOOL_H */
/* /*
* calc historic booleans * calc historic booleans
*/ */
#undef TRUE #undef TRUE
#define TRUE ((bool) true) #define TRUE (true)
#undef FALSE #undef FALSE
#define FALSE ((bool) false) #define FALSE (false)
#undef BOOL #undef BOOL
#define BOOL bool #define BOOL bool
@@ -78,7 +74,7 @@ typedef unsigned char bool;
* strtobool - convert a string to a boolean * strtobool - convert a string to a boolean
*/ */
#if !defined(strtobool) #if !defined(strtobool)
#define strtobool(x) ((bool) ((x) != NULL && !strcmp((x), "true"))) #define strtobool(x) ((bool) ((x) != NULL && strcmp((x), "true") == 0))
#endif #endif