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Bug 3811

Summary: change HAVE_COPYSIGN to HAVE__COPYSIGN in SDL_config_windows.h
Product: SDL Reporter: Ozkan Sezer <sezeroz>
Component: buildAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 2.0   
Hardware: All   
OS: Windows (All)   

Description Ozkan Sezer 2017-09-10 17:28:11 UTC 
The patch below changes HAVE_COPYSIGN macro in SDL_config_windows.h to
HAVE__COPYSIGN, so that _copysign() can be used in SDL_stdlib.h which
is available in many more windows-targeting toolchains such as MinGW,
MSVC >= 6, etc, and not just  MSVC >= 2013. SDL_stdlib.c already has a
specific check for HAVE__COPYSIGN, so I believe this is reasonable.

diff --git a/include/SDL_config_windows.h b/include/SDL_config_windows.h
--- a/include/SDL_config_windows.h
+++ b/include/SDL_config_windows.h
@@ -142,12 +142,12 @@
 #define HAVE_SQRTF 1
 #define HAVE_TAN 1
 #define HAVE_TANF 1
+#define HAVE__COPYSIGN 1
 #if defined(_MSC_VER)
 /* These functions were added with the VC++ 2013 C runtime library */
 #if _MSC_VER >= 1800
 #define HAVE_STRTOLL 1
 #define HAVE_VSSCANF 1
-#define HAVE_COPYSIGN 1
 #define HAVE_SCALBN 1
 #endif
 /* This function is available with at least the VC++ 2008 C runtime library */
Comment 1 Sam Lantinga 2017-09-10 17:30:44 UTC 
Added, thanks!
https://hg.libsdl.org/SDL/rev/998f992b03ed