[oct-scm] [oct-git]OCT: A portable Lisp implementation for quad-double precision floats branch master updated. 405df618a38d3b8ddaae691f865bbf068e931ac5

[Raymond Toy]

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- Log -----------------------------------------------------------------
commit 405df618a38d3b8ddaae691f865bbf068e931ac5
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Wed Mar 21 09:35:22 2012 -0700

    Add Euler's constant and fix dependencies.
    
    oct.asd:
    o qd-const2 depends on qd-const.
    
    qd-const.lisp:
    o Add qd value for Euler's constant
    
    qd-const2.lisp:
    o Add qd-real value for Euler's constant.

diff --git a/oct.asd b/oct.asd
index ed7a586..3f8d70c 100644
--- a/oct.asd
+++ b/oct.asd
@@ -52,7 +52,7 @@
 	  :depends-on ("qd" "qd-const"))
    (:file "qd-class"
 	  :depends-on ("qd-fun"))
-   (:file "qd-const2" :depends-on ("qd-class"))
+   (:file "qd-const2" :depends-on ("qd-class" "qd-const"))
    (:file "qd-methods"
 	  :depends-on ("qd-class"))
    (:file "qd-reader"
diff --git a/qd-const.lisp b/qd-const.lisp
index 628a520..56840b7 100644
--- a/qd-const.lisp
+++ b/qd-const.lisp
@@ -3752,6 +3752,15 @@
 		   (%make-qd-d q0 q1 q2 q3))))
    "A table of cos(k/1024) for k = 1 to 256")
 
+(defconstant +qd-%gamma+
+  (multiple-value-bind (q0 q1 q2 q3)
+      (renorm-5 (scale-float (float 5199096506725913 1.0d0) -53)
+		(scale-float (float -6416270704492459 1.0d0) -110)
+		(scale-float (float -5430032177773649 1.0d0) -164)
+		(scale-float (float 7163319935831933 1.0d0) -218)
+		(scale-float (float -6507777405222912 1.0d0) -273))
+    (%make-qd-d q0 q1 q2 q3))
+  "Quad-double value of Euler's constant")
 
 #||
 
diff --git a/qd-const2.lisp b/qd-const2.lisp
index 2ad911d..e5e65e6 100644
--- a/qd-const2.lisp
+++ b/qd-const2.lisp
@@ -82,3 +82,7 @@
 (defconstant +qd-real-one+
   (make-instance 'qd-real :value (make-qd-d 1d0))
   "QD-REAL representation of 1")
+
+(defconstant +%gamma+
+  (make-instance 'qd-real :value octi::+qd-%gamma+)
+  "Euler's constant")
\ No newline at end of file

-----------------------------------------------------------------------

Summary of changes:
 oct.asd        |    2 +-
 qd-const.lisp  |    9 +++++++++
 qd-const2.lisp |    4 ++++
 3 files changed, 14 insertions(+), 1 deletions(-)


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OCT:  A portable Lisp implementation for quad-double precision floats