From: Taylor R Campbell <campbell@mumble.net>
Date: Fri, 30 Nov 2018 08:50:19 +0000 (+0000)
Subject: Note copysign procedure.
X-Git-Tag: mit-scheme-pucked-10.1.7~3^2~86
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=9db0f408a19401062c68c9b123aa150425f33e26;p=mit-scheme.git

Note copysign procedure.
---

diff --git a/src/relnotes/arith b/src/relnotes/arith
index 20e36b040..b736ec103 100644
--- a/src/relnotes/arith
+++ b/src/relnotes/arith
@@ -16,3 +16,5 @@ New procedures:
 . (logistic-1/2 x) = (- (logistic x) 1/2), inverse of logit1/2+
 . (logsumexp (list x y z ...)) = log (e^x + e^y + e^z + ...),
   guaranteed not to overflow or underflow
+. (copysign m s) returns a real number with the magnitude of m and
+  the sign of s.