Convert the C code to using stdbool and true/false

Earlier we converted the C++ code to using true/false, and this converts
the C code to using the same style.

We already depended on stdbool.h in subsurfacestartup.[ch], and we build
with -std=gnu99 so nobody could build subsurface without a c99 compiler.

[Dirk Hohndel: small change suggested by Thiago Macieira: don't include
               stdbool.h for C++]

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 0 insertions, 16 deletions

diff --git a/dive.h b/dive.h
index 2b69c949c..d3bada163 100644
--- a/dive.h
+++ b/dive.h
@@ -28,23 +28,7 @@
 #ifdef __cplusplus
 extern "C" {
 #else
-#if __STDC_VERSION__ >= 199901L
 #include <stdbool.h>
-#ifndef TRUE
-#define TRUE true
-#endif
-#ifndef FALSE
-#define FALSE false
-#endif
-#else
-typedef int bool;
-#ifndef TRUE
-#define TRUE 1
-#endif
-#ifndef FALSE
-#define FALSE 0
-#endif
-#endif
 #endif
 
 #define O2_IN_AIR		209     // permille