From 839dc5419014e861e853e06ca84ebeb590c9b270 Mon Sep 17 00:00:00 2001
From: ram <ram>
Date: Sat, 1 Feb 1992 13:55:28 +0000
Subject: [PATCH] Added some bogus float trap constants to make float-trap
 compile.

---
 compiler/rt/afpa.lisp | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/compiler/rt/afpa.lisp b/compiler/rt/afpa.lisp
index 4f18cfa61..b73c36982 100644
--- a/compiler/rt/afpa.lisp
+++ b/compiler/rt/afpa.lisp
@@ -7,7 +7,7 @@
 ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
 ;;;
 (ext:file-comment
-  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/rt/afpa.lisp,v 1.2 1991/08/25 19:04:46 ram Exp $")
+  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/rt/afpa.lisp,v 1.3 1992/02/01 13:55:28 ram Exp $")
 ;;;
 ;;; **********************************************************************
 ;;;
@@ -22,7 +22,6 @@
 ;;;
 (in-package "RT")
 
-
 ;;;; Status register formats.
 
 (defconstant afpa-rounding-mode-byte (byte 2 (- 31 24)))
@@ -35,6 +34,32 @@
 (defconstant afpa-compare-lss #b10)
 (defconstant afpa-compare-unordered #b11)
 
+;;; ### Note: the following status register constants are totally bogus (are
+;;; actually for the mc68881, and exist only to make some code compile without
+;;; errors.
+;;;
+;;; Encoding of float exceptions in the FLOATING-POINT-MODES result.  This is
+;;; also the encoding used in the mc68881 accrued exceptions.
+;;;
+(defconstant float-inexact-trap-bit (ash 1 0))
+(defconstant float-divide-by-zero-trap-bit (ash 1 1))
+(defconstant float-underflow-trap-bit (ash 1 2))
+(defconstant float-overflow-trap-bit (ash 1 3))
+(defconstant float-invalid-trap-bit (ash 1 4))
+
+(defconstant float-round-to-nearest 0)
+(defconstant float-round-to-zero 1)
+(defconstant float-round-to-negative 2)
+(defconstant float-round-to-positive 3)
+
+;;; Positions of bits in the FLOATING-POINT-MODES result.
+;;;
+(defconstant float-rounding-mode (byte 2 0))
+(defconstant float-sticky-bits (byte 5 2))
+(defconstant float-traps-byte (byte 5 7))
+(defconstant float-exceptions-byte (byte 5 12))
+(defconstant float-fast-bit 0)
+
 
 ;;;; Move functions:
 ;;;
-- 
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