Set default rounding mode to FE_NEAREST again. Thanks to Matthias Bentrup for providing some explanations.

code/sys/sys_unix.c

@@ -810,8 +810,8 @@ void Sys_GLimpInit( void )
 
 void Sys_SetFloatEnv(void)
 {
-	// rounding towards 0
-	fesetround(FE_TOWARDZERO);
+	// rounding toward nearest
+	fesetround(FE_TONEAREST);
 }
 
 /*

code/sys/sys_win32.c

@@ -59,14 +59,14 @@ Set FPU control word to default value
   #define _MCW_EM	0x0008001fU
   #define _MCW_RC	0x00000300U
   #define _MCW_PC	0x00030000U
-  #define _RC_CHOP	0x00000300U
+  #define _RC_NEAR      0x00000000U
   #define _PC_53	0x00010000U
   
   unsigned int _controlfp(unsigned int new, unsigned int mask);
 #endif
 
 #define FPUCWMASK1 (_MCW_RC | _MCW_EM)
-#define FPUCW (_RC_CHOP | _MCW_EM | _PC_53)
+#define FPUCW (_RC_NEAR | _MCW_EM | _PC_53)
 
 #if idx64
 #define FPUCWMASK	(FPUCWMASK1)