From 9bf491a18e4b772505c3767cf0249eb24f0a822b Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Sat, 24 Feb 2018 17:10:44 -0400
Subject: - Removed the "root2" and "root3" host procedures (their
 functionality is redundant, in the presence of the "pow" procedure).

---
 stdlib/test/test/lux/data/color.lux          |  8 ++++----
 stdlib/test/test/lux/data/number/complex.lux |  9 +++++----
 stdlib/test/test/lux/math.lux                | 16 ----------------
 3 files changed, 9 insertions(+), 24 deletions(-)

(limited to 'stdlib/test')

diff --git a/stdlib/test/test/lux/data/color.lux b/stdlib/test/test/lux/data/color.lux
index ed62a221f..29081715b 100644
--- a/stdlib/test/test/lux/data/color.lux
+++ b/stdlib/test/test/lux/data/color.lux
@@ -23,10 +23,10 @@
   (-> @.Color @.Color Frac)
   (let [[fr fg fb] (@.unpack from)
         [tr tg tb] (@.unpack to)]
-    (math.root2 ($_ f/+
-                    (|> (scale tr) (f/- (scale fr)) square)
-                    (|> (scale tg) (f/- (scale fg)) square)
-                    (|> (scale tb) (f/- (scale fb)) square)))))
+    (math.pow 0.5 ($_ f/+
+                      (|> (scale tr) (f/- (scale fr)) square)
+                      (|> (scale tg) (f/- (scale fg)) square)
+                      (|> (scale tb) (f/- (scale fb)) square)))))
 
 (def: error-margin Frac 1.8)
 
diff --git a/stdlib/test/test/lux/data/number/complex.lux b/stdlib/test/test/lux/data/number/complex.lux
index 98138d9fe..8369ad676 100644
--- a/stdlib/test/test/lux/data/number/complex.lux
+++ b/stdlib/test/test/lux/data/number/complex.lux
@@ -143,7 +143,7 @@
                   (let [signum-abs (|> x &.c/signum &.c/abs (get@ #&.real))]
                     (or (f/= 0.0 signum-abs)
                         (f/= 1.0 signum-abs)
-                        (f/= (math.root2 2.0) signum-abs))))
+                        (f/= (math.pow 0.5 2.0) signum-abs))))
 
             (test "Negation is its own inverse."
                   (let [there (&.c/negate x)
@@ -162,7 +162,8 @@
     (|> normal forward backward (within? margin-of-error normal))))
 
 (context: "Trigonometry"
-  (<| (times +100)
+  (<| (seed +17274883666004960943)
+      ## (times +100)
       (do @
         [angle (|> gen-complex (:: @ map (|>> (update@ #&.real (f/% 1.0))
                                               (update@ #&.imaginary (f/% 1.0)))))]
@@ -181,8 +182,8 @@
       (do @
         [x gen-complex]
         ($_ seq
-            (test "Square root is inverse of power 2.0"
-                  (|> x (&.pow' 2.0) &.root2 (within? margin-of-error x)))
+            (test "Root 2 is inverse of power 2."
+                  (|> x (&.pow' 2.0) (&.pow' 0.5) (within? margin-of-error x)))
 
             (test "Logarithm is inverse of exponentiation."
                   (|> x &.log &.exp (within? margin-of-error x)))
diff --git a/stdlib/test/test/lux/math.lux b/stdlib/test/test/lux/math.lux
index b95751dbc..80ca6995c 100644
--- a/stdlib/test/test/lux/math.lux
+++ b/stdlib/test/test/lux/math.lux
@@ -35,22 +35,6 @@
                   (trigonometric-symmetry &.tan &.atan angle))
             ))))
 
-(context: "Roots"
-  (<| (times +100)
-      (do @
-        [factor (|> r.nat (:: @ map (|>> (n/% +1000)
-                                         (n/max +1)
-                                         nat-to-int
-                                         int-to-frac)))
-         base (|> r.frac (:: @ map (f/* factor)))]
-        ($_ seq
-            (test "Square-root is inverse of square."
-                  (|> base (&.pow 2.0) &.root2 (f/= base)))
-            
-            (test "Cubic-root is inverse of cube."
-                  (|> base (&.pow 3.0) &.root3 (f/= base)))
-            ))))
-
 (context: "Rounding"
   (<| (times +100)
       (do @
-- 
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