* include/_mingw.h: Increment version to 2.0.

* Makefile.in: Ditto.
	Merge in mingwex branch.

winsup/mingw/mingwex/fesetenv.c

@@ -0,0 +1,41 @@
+#include <fenv.h>
+
+/* 7.6.4.3
+   The fesetenv function establishes the floating-point environment
+   represented by the object pointed to by envp. The argument envp
+   points to an object set by a call to fegetenv or feholdexcept, or
+   equal the macro FE_DFL_ENV or an implementation-defined environment
+   macro. Note that fesetenv merely installs the state of the exception
+   flags represented through its argument, and does not raise these
+   exceptions.
+ */
+
+extern void (*_imp___fpreset)( void ) ;
+
+int fesetenv (const fenv_t * envp)
+{
+  if (envp == FE_PC64_ENV)
+   /*
+    *  fninit initializes the control register to 0x37f,
+    *  the status register to zero and the tag word to 0FFFFh.
+    *  The other registers are unaffected.
+    */
+    __asm__ ("fninit");
+
+  else if (envp == FE_PC53_ENV)
+   /*
+    * MS _fpreset() does same *except* it sets control word
+    * to 0x27f (53-bit precison).
+    * We force calling _fpreset in msvcrt.dll
+    */
+
+   (*_imp___fpreset)();
+
+  else if (envp == FE_DFL_ENV)
+    /* Use the choice made at app startup */ 
+    _fpreset();
+
+  else
+    __asm__ ("fldenv %0;" : : "m" (*envp));
+  return 0;
+}