From 8084f105a251b025176b293a5232295fcd39f1d3 Mon Sep 17 00:00:00 2001
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Tue, 18 Sep 2007 22:08:04 -0700
Subject: Document Infinity and NaN

Add __Infinity__, __QNaN__, and __SNaN__ to the documentation.
---
 doc/nasmdoc.src | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'doc')

diff --git a/doc/nasmdoc.src b/doc/nasmdoc.src
index 96faefb..c79cd39 100644
--- a/doc/nasmdoc.src
+++ b/doc/nasmdoc.src
@@ -151,6 +151,7 @@ convention
 \IR{ms-dos} MS-DOS
 \IR{ms-dos device drivers} MS-DOS device drivers
 \IR{multipush} \c{multipush} macro
+\IR{nan} NaN
 \IR{nasm version} NASM version
 \IR{netbsd} NetBSD
 \IR{omf} OMF
@@ -1424,6 +1425,15 @@ do floating arithmetic it would have to include its own complete set
 of floating-point routines, which would significantly increase the
 size of the assembler for very little benefit.
 
+The special tokens \i\c{__Infinity__}, \i\c{__QNaN__} (or
+\i\c{__NaN__}) and \i\c{__SNaN__} can be used to generate
+\I{infinity}infinities, quiet \i{NaN}s, and signalling NaNs,
+respectively.  These are normally used as macros:
+
+\c %define Inf __Infinity__
+\c %define NaN __QNaN__
+\c
+\c       dq    +1.5, -Inf, NaN         ; Double-precision constants
 
 \H{expr} \i{Expressions}
 
-- 
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