From 87b82b5822ca54228cfa6df29be3ad9d4bc47d16 Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Mon, 20 Feb 2017 00:05:28 -0800
Subject: Import Upstream version 2d2

---
 t3.init | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 77 insertions(+), 21 deletions(-)

(limited to 't3.init')

diff --git a/t3.init b/t3.init
index 4c0fb97..824d465 100644
--- a/t3.init
+++ b/t3.init
@@ -16,8 +16,8 @@
 
 (define (scheme-implementation-version) "3.1")
 
-;;; (scheme-implementation-home-page) should return a (string) URL
-;;; (Uniform Resource Locator) for this scheme implementation's home
+;;; (scheme-implementation-home-page) should return a (string) URI
+;;; (Uniform Resource Identifier) for this scheme implementation's home
 ;;; page; or false if there isn't one.
 
 (define (scheme-implementation-home-page)
@@ -59,24 +59,70 @@
 					;(slib:load-source "filename")
 	compiled			;can load compiled files
 					;(slib:load-compiled "filename")
-	rev3-report
-	rev4-optional-procedures
-	rev3-procedures
-	rev2-procedures
-	multiarg/and-
-	multiarg-apply
-	rationalize
-	object-hash
-	delay
-	i/o-redirection
+
+		       ;; Scheme report features
+
+;	rev5-report			;conforms to
+;	eval				;R5RS two-argument eval
+;	values				;R5RS multiple values
+;	dynamic-wind			;R5RS dynamic-wind
+;	macro				;R5RS high level macros
+	delay				;has DELAY and FORCE
+	multiarg-apply			;APPLY can take more than 2 args.
 	char-ready?
-	with-file
-	transcript
-	full-continuation
+	rationalize
+	rev4-optional-procedures	;LIST-TAIL, STRING->LIST,
+					;LIST->STRING, STRING-COPY,
+					;STRING-FILL!, LIST->VECTOR,
+					;VECTOR->LIST, and VECTOR-FILL!
+
+;	rev4-report			;conforms to
+
+;	ieee-p1178			;conforms to
+
+	rev3-report			;conforms to
+
+	rev2-procedures			;SUBSTRING-MOVE-LEFT!,
+					;SUBSTRING-MOVE-RIGHT!,
+					;SUBSTRING-FILL!,
+					;STRING-NULL?, APPEND!, 1+,
+					;-1+, <?, <=?, =?, >?, >=?
+	object-hash			;has OBJECT-HASH
+
+	multiarg/and-			;/ and - can take more than 2 args.
+	with-file			;has WITH-INPUT-FROM-FILE and
+					;WITH-OUTPUT-FROM-FILE
+	transcript			;TRANSCRIPT-ON and TRANSCRIPT-OFF
+;	ieee-floating-point		;conforms to IEEE Standard 754-1985
+					;IEEE Standard for Binary
+					;Floating-Point Arithmetic.
+	full-continuation		;can return multiple times
+
+			;; Other common features
+
+;	srfi				;srfi-0, COND-EXPAND finds all srfi-*
+;	sicp				;runs code from Structure and
+					;Interpretation of Computer
+					;Programs by Abelson and Sussman.
+;	defmacro			;has Common Lisp DEFMACRO
+;	record				;has user defined data structures
+;	string-port			;has CALL-WITH-INPUT-STRING and
+					;CALL-WITH-OUTPUT-STRING
+;	sort
 	pretty-print
-	format
+;	object->string
+	format				;Common-lisp output formatting
 	trace				;has macros: TRACE and UNTRACE
-	program-arguments
+;	compiler			;has (COMPILER)
+;	ed				;(ED) is editor
+;	system				;posix (system <string>)
+;	getenv				;posix (getenv <string>)
+	program-arguments		;returns list of strings (argv)
+;	current-time			;returns time in seconds since 1/1/1970
+
+		  ;; Implementation Specific features
+
+	i/o-redirection
 	))
 
 (define substring
@@ -174,6 +220,13 @@
 
 (define delete-file file-delete)
 
+;;; "rationalize" adjunct procedures.
+(define (find-ratio x e)
+  (let ((rat (rationalize x e)))
+    (list (numerator rat) (denominator rat))))
+(define (find-ratio-between x y)
+  (find-ratio (/ (+ x y) 2) (/ (- x y) 2)))
+
 ;;; CHAR-CODE-LIMIT is one greater than the largest integer which can
 ;;; be returned by CHAR->INTEGER.
 (define char-code-limit 256)
@@ -242,12 +295,15 @@
 
 (define slib:warn
   (lambda args
-    (let ((port (current-error-port)))
-      (display "Warn: " port)
-      (for-each (lambda (x) (display x port)) args))))
+    (let ((cep (current-error-port)))
+      (if (provided? 'trace) (print-call-stack cep))
+      (display "Warn: " cep)
+      (for-each (lambda (x) (display x cep)) args))))
 
 ;;; define an error procedure for the library
-(define slib:error error)
+(define (slib:error . args)
+  (if (provided? 'trace) (print-call-stack (current-error-port)))
+  (apply error args))
 
 ;;; define these as appropriate for your system.
 (define slib:tab #\tab)
-- 
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