fix for windows, because floorf and rintf didn't work there

configure.in

@@ -42,14 +42,11 @@ dnl Checks for typedefs, structures, and compiler characteristics.
 case "$target" in
     *cygwin* | *mingw32* | *mingw32msvc* )
         CFLAGS="$CFLAGS"
-        LIBS="$LIBS -liberty -lwsock32"
-        MATHLIB=""
-        SYS_GL_LIBS="-lopengl32 -lglu32"
+        LIBS="$LIBS -liberty -lwsock32 -lm"
         ;;
     *solaris* )
 		CFLAGS="$CFLAGS"
 		LIBS="$LIBS -lsocket -lnsl -lm"
-        MATHLIB="-lm"
         AC_PATH_X
         AC_PATH_XTRA
         if test x$have_x = xyes; then
@@ -60,49 +57,16 @@ case "$target" in
         fi
         ;;
     *)
-        MATHLIB="-lm"
         AC_PATH_X
         AC_PATH_XTRA
         if test x$have_x = xyes; then
             CFLAGS="$CFLAGS $X_CFLAGS"
-            SYS_GL_LIBS="$X_LIBS -lGL -lGLU"
-        else
-            SYS_GL_LIBS="-lGL -lGLU"
         fi
         ;;
 esac
 	CFLAGS="$CFLAGS -Wall"
 
 
-AC_SUBST(MATHLIB)
-
-
-
-dnl Check for OpenGL ***********************+
-dnl AC_MSG_CHECKING(for OpenGL support)
-dnl have_opengl=no
-dnl AC_TRY_COMPILE([
-dnl  #if defined(__APPLE__) && defined(__MACH__)
-dnl  #include <OpenGL/gl.h>
-dnl  #include <OpenGL/glu.h>
-dnl  #else
-dnl  #include <GL/gl.h>
-dnl  #include <GL/glu.h>
-dnl  #endif
-dnl ],[
-dnl ],[
-dnl have_opengl=yes
-dnl ])
-dnl AC_MSG_RESULT($have_opengl)
-dnl if test x$have_opengl = xyes; then
-dnl     CFLAGS="$CFLAGS"
-dnl     LIBS="$LIBS $SYS_GL_LIBS"
-dnl     AC_DEFINE(HAVE_OPENGL, [1], [OpenGL Headers found])
-dnl else
-dnl     AC_MSG_WARN(Unable to find OpenGL headers and libraries)
-dnl fi
-
-
 
 dnl SDL_mixer **********************************
 AC_ARG_WITH(sdlmixer-prefix, [  --with-sdlmixer-prefix=PFX prefix where SDL_mixer library is installed], sdlmixer_prefix="$withval", sdlmixer_prefix="")
@@ -126,6 +90,74 @@ fi
 
 
 dnl Checks for library functions.
+dnl Check for rintf and functions like that
+AC_MSG_CHECKING(for rintf)
+have_rintf=no
+AC_TRY_COMPILE([
+],[
+int i; float f; i = rintf (f); 
+],[
+have_rintf=yes
+])
+AC_MSG_RESULT($have_rintf)
+if test x$have_rintf = xyes; then
+	AC_CHECK_LIB(m, rintf, have_rintf=yes, have_rintf=no , )
+	if test x$have_rintf = xyes; then
+    	AC_DEFINE(HAVE_RINTF, [1], [if rintf is working here])
+	fi
+fi
+
+
+dnl Check for rintf and functions like that
+AC_MSG_CHECKING(for rint)
+have_rint=no
+AC_TRY_COMPILE([
+],[
+int i; double f; i = rint (f); 
+],[
+have_rint=yes
+])
+AC_MSG_RESULT($have_rint)
+if test x$have_rint = xyes; then
+	AC_CHECK_LIB(m, rint, have_rint=yes, have_rint=no , )
+	if test x$have_rint = xyes; then
+    	AC_DEFINE(HAVE_RINT, [1], [if rint is working here])
+	fi
+fi
+
+dnl Check for floorf and functions like that
+AC_MSG_CHECKING(for floorf)
+have_floorf=no
+AC_TRY_COMPILE([
+],[
+int i; float f; i = floorf (f); 
+],[
+have_floorf=yes
+])
+AC_MSG_RESULT($have_floorf)
+if test x$have_floorf = xyes; then
+	AC_CHECK_LIB(m, floorf, have_floorf=yes, have_floorf=no , )
+	if test x$have_floorf = xyes; then
+    	AC_DEFINE(HAVE_FLOORF, [1], [if floorf is working here])
+	fi
+fi
+
+dnl Check for floorf and functions like that
+AC_MSG_CHECKING(for floor)
+have_floor=no
+AC_TRY_COMPILE([
+],[
+int i; double f; i = floor (f); 
+],[
+have_floor=yes
+])
+AC_MSG_RESULT($have_floor)
+if test x$have_floor = xyes; then
+	AC_CHECK_LIB(m, floor, have_floor=yes, have_floor=no , )
+	if test x$have_floor = xyes; then
+    	AC_DEFINE(HAVE_FLOOR, [1], [if floor is working here])
+	fi
+fi
 
 
 dnl Checks for Additional stuffs.

include/sysfunc.h

@@ -1,4 +1,4 @@
-/* $Id: sysfunc.h,v 1.3 2003/09/23 20:28:24 stpohle Exp $ */
+/* $Id: sysfunc.h,v 1.4 2003/11/09 16:35:10 stpohle Exp $ */
 /* include some system near functions */
 
 #ifndef _SYSFUNC_H_
@@ -29,4 +29,20 @@ extern inline Sint32 s_swap32 (Sint32 i);
 extern _direntry *s_getdir (char *path);
 extern _direntry *s_dirfilter (_direntry *dirstart, signed char dirflags);
 
+#ifndef HAVE_RINTF
+	#ifndef HAVE_RINT
+		extern inline float rintf (float f);
+	#else
+		#define rintf(__x) ((float)rint(double)__x)
+	#endif
+#endif
+
+#ifndef HAVE_FLOORF
+	#ifndef HAVE_FLOOR
+		#define floorf(__x) ((float)((int)__x))
+	#else
+		#define floorf(__x) ((float)floor((double)__x))
+	#endif
+#endif
+
 #endif

src/sysfunc.c

@@ -1,4 +1,4 @@
-/* $Id: sysfunc.c,v 1.19 2003/09/11 19:44:32 stpohle Exp $
+/* $Id: sysfunc.c,v 1.20 2003/11/09 16:35:10 stpohle Exp $
     sysfunc.c - this file hold some routines for the system functions..
     like d_delay
 */
@@ -222,3 +222,12 @@ inline Sint32 s_swap32 (Sint32 i) {
 	
 	return r;
 };
+
+#if !defined(HAVE_RINTF) && !defined(HAVE_RINT)
+inline float rintf (float f) {
+	if (CUTINT (f) < 0.5f)
+		return (floorf (f));
+	else
+		return (floorf (f + 1.0f));
+};
+#endif