From 9c3236394224167b31eeb402fa78928a0e3eb7fe Mon Sep 17 00:00:00 2001
From: Matthias Andreas Benkard <matthias@benkard.de>
Date: Tue, 29 Jul 2008 19:56:21 +0200
Subject: Add a non-trivial number of arithmetic methods to number classes.

---
 MLKDoubleFloat.m | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

(limited to 'MLKDoubleFloat.m')

diff --git a/MLKDoubleFloat.m b/MLKDoubleFloat.m
index 3a598fd..a60bd8c 100644
--- a/MLKDoubleFloat.m
+++ b/MLKDoubleFloat.m
@@ -24,6 +24,7 @@
 
 #import <Foundation/NSString.h>
 
+#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <locale.h>
@@ -114,6 +115,51 @@
   return [MLKDoubleFloat doubleFloatWithDouble:(value / [(MLKFloat*)arg doubleValue])];
 }
 
+-(NSComparisonResult) compare:(MLKDoubleFloat *)arg
+{
+  if (self->value == arg->value)
+    return NSOrderedSame;
+  else if (self->value < arg->value)
+    return NSOrderedAscending;
+  else
+    return NSOrderedDescending;
+}
+
+-(BOOL) isEqual:(id)arg
+{
+  return ([arg isKindOfClass:[MLKDoubleFloat class]]
+          && self->value == ((MLKDoubleFloat *)arg)->value);
+}
+
+
+#define DEFINE_NULLARY_OPERATOR(NAME)                                   \
+  -(MLKDoubleFloat *) NAME                                              \
+  {                                                                     \
+    return [MLKDoubleFloat doubleFloatWithDouble:(NAME (value))];       \
+  }
+
+DEFINE_NULLARY_OPERATOR (sin);
+DEFINE_NULLARY_OPERATOR (cos);
+DEFINE_NULLARY_OPERATOR (tan);
+DEFINE_NULLARY_OPERATOR (asin);
+DEFINE_NULLARY_OPERATOR (acos);
+DEFINE_NULLARY_OPERATOR (atan);
+DEFINE_NULLARY_OPERATOR (sinh);
+DEFINE_NULLARY_OPERATOR (cosh);
+DEFINE_NULLARY_OPERATOR (tanh);
+DEFINE_NULLARY_OPERATOR (exp);
+DEFINE_NULLARY_OPERATOR (log);
+DEFINE_NULLARY_OPERATOR (sqrt);
+DEFINE_NULLARY_OPERATOR (ceil);
+DEFINE_NULLARY_OPERATOR (floor);
+
+
+-(MLKDoubleFloat *) pow:(MLKDoubleFloat *)exponent
+{
+  return [MLKDoubleFloat doubleFloatWithDouble:
+                           (pow (self->value, exponent->value))];
+}
+
 -(NSString *) description
 {
   NSString *str = [NSString stringWithFormat:@"%e", value];
-- 
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