From: Taylor R Campbell <campbell@mumble.net>
Date: Mon, 26 Nov 2018 03:06:31 +0000 (+0000)
Subject: Note flo:classify and flo:subnormal?.
X-Git-Tag: mit-scheme-pucked-10.1.7~3^2~170
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=3da777fe54999d471ec6b2f266107d1b4f83442c;p=mit-scheme.git

Note flo:classify and flo:subnormal?.
---

diff --git a/src/relnotes/flonum b/src/relnotes/flonum
index e852e3d9c..b1a7c05d9 100644
--- a/src/relnotes/flonum
+++ b/src/relnotes/flonum
@@ -50,3 +50,11 @@ New flonum-related definitions:
   which (expt 10. x) gives a finite result.
 . (flo:ldexp x e) = x * 2^e
 . (flo:scalbn x e) = x * b^e, where b is flo:radix
+. (flo:classify x) returns one of the symbols
+  - zero
+  - subnormal
+  - normal
+  - infinite
+  - nan
+. (flo:subnormal? x) is true if x is subnormal; false if zero, normal,
+  infinite, or NaN