shithub: zelda3

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skip definition of inline swap16() function in case a macro already exists (#175)

Fixes the build on OpenBSD.

--- a/types.h

+++ b/types.h

@@ -63,7 +63,9 @@

 #define DWORD(x) (*(uint32*)&(x))

 #define XY(x, y) ((y)*64+(x))

+#ifndef swap16

 static inline uint16 swap16(uint16 v) { return (v << 8) | (v >> 8); }

+#endif

 typedef struct Point16U {

   uint16 x, y;