From: Noam Postavsky <npostavs@gmail.com>
Date: Wed, 15 Aug 2018 03:26:50 +0000 (-0400)
Subject: Fix math-imaginary-i check
X-Git-Tag: emacs-26.1.90~183
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=f0888179237b25e32b46a8a855acb3d3453e4c69;p=emacs.git

Fix math-imaginary-i check

Reported by Bastian Erdnüß at
<https://lists.gnu.org/archive/html/emacs-devel/2018-08/msg00300.html>.
* lisp/calc/calc-cplx.el (math-imaginary-i): Check for a value
of (polar 1 <quarter-circle>).
---

diff --git a/lisp/calc/calc-cplx.el b/lisp/calc/calc-cplx.el
index 4a453a73d72..35cd31dfb4f 100644
--- a/lisp/calc/calc-cplx.el
+++ b/lisp/calc/calc-cplx.el
@@ -273,8 +273,8 @@
     (or (eq (car-safe val) 'special-const)
 	(equal val '(cplx 0 1))
 	(and (eq (car-safe val) 'polar)
-	     (eq (nth 1 val) 0)
-	     (Math-equal (nth 1 val) (math-quarter-circle nil))))))
+	     (eq (nth 1 val) 1)
+	     (Math-equal (nth 2 val) (math-quarter-circle nil))))))
 
 ;;; Extract the real or complex part of a complex number.  [R N] [Public]
 ;;; Also extracts the real part of a modulo form.