* mingwex/math/round.c: Rewrite.

* mingwex/math/roundf.c: Rewrite.
	* mingwex/math/roundl.c: Rewrite.

winsup/mingw/mingwex/math/round.c

@@ -1,29 +1,8 @@
-#include <fenv.h>
+#include <math.h>
 
 double
-round (double x) {
-  double retval;
-  unsigned short saved_cw, _cw;
-  __asm__ (
-	"fnstcw %0;"
-  	: "=m" (saved_cw)
-	); /* save  control word  */
-  _cw = ~(FE_TONEAREST | FE_DOWNWARD | FE_UPWARD | FE_TOWARDZERO)
-     	  | (x > 0.0 ? FE_UPWARD : FE_DOWNWARD); /* round away from zero */
-  __asm__ (
-	"fldcw %0;"
-	:
-	: "m" (_cw)
-	);  /* load the rounding control */
-  __asm__ (
-	"frndint;"
-	: "=t" (retval)
-	: "0" (x)
-	); /* do the rounding */
-  __asm__ (
-	"fldcw %0;"
-	:
-	: "m" (saved_cw)
-	); /* restore control word */
-  return retval;
+round (double x)
+{
+  /* Add +/- 0.5 then then round towards zero.  */
+  return trunc ( x + (x >= 0.0 ?  0.5 : -0.5));
 }