first cut of the alpha version.

sys/arch/alpha/include/ieeefp.h

@@ -0,0 +1,26 @@
+/*	$NetBSD: ieeefp.h,v 1.1 1995/04/29 01:09:17 cgd Exp $	*/
+
+/* 
+ * Written by J.T. Conklin, Apr 28, 1995
+ * Public domain.
+ */
+
+#ifndef _ALPHA_IEEEFP_H_
+#define _ALPHA_IEEEFP_H_
+
+typedef int fp_except;
+#define	FP_X_INV	0x01	/* invalid operation exception */
+#define	FP_X_DZ		0x02	/* divide-by-zero exception */
+#define	FP_X_OFL	0x04	/* overflow exception */
+#define	FP_X_UFL	0x08	/* underflow exception */
+#define	FP_X_IMP	0x10	/* imprecise (loss of precision; "inexact") */
+#define	FP_X_IOV	0x20    /* integer overflow XXX? */
+
+typedef enum {
+    FP_RZ=0,			/* round to zero (truncate) */
+    FP_RM=1,			/* round toward negative infinity */
+    FP_RN=2,			/* round to nearest representable number */
+    FP_RP=3			/* round toward positive infinity */
+} fp_rnd;
+
+#endif /* _ALPHA_IEEEFP_H_ */