Add class MLKFloat.

1 files changed, 55 insertions, 0 deletions

diff --git a/MLKFloat.m b/MLKFloat.m
new file mode 100644
index 0000000..4083146
--- /dev/null
+++ b/MLKFloat.m
@@ -0,0 +1,55 @@
+/* -*- mode: objc; coding: utf-8 -*- */
+/* Étoilisp/Mulklisp, a Common Lisp subset for the Étoilé runtime.
+ * Copyright (C) 2008  Matthias Andreas Benkard.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "MLKFloat.h"
+#import "MLKSingleFloat.h"
+#import "MLKDoubleFloat.h"
+#import "MLKPackage.h"
+#import "MLKDynamicContext.h"
+
+
+@implementation MLKFloat : MLKLispValue
++(MLKFloat *) floatWithExponentMarker:(unichar)exponentMarker
+                          integerPart:(NSString *)intPart
+                             negative:(BOOL)negative
+                       fractionalPart:(NSString *)fractPart
+                             exponent:(NSString *)exponent
+                     exponentNegative:(BOOL)exponentNegative
+{
+  MLKSymbol *defaultFormat;
+  MLKPackage *cl = [MLKPackage findPackage:@"COMMON-LISP"];
+  defaultFormat = [[MLKDynamicContext currentContext]
+                    valueForBinding:[cl intern:@"*READ-DEFAULT-FLOAT-FORMAT*"]];
+  if (exponentMarker == 'd' || exponentMarker == 'D'
+      || exponentMarker == 'l' || exponentMarker == 'L'
+      || ((exponentMarker == 'e' || exponentMarker == 'E')
+          && ((defaultFormat == [cl intern:@"DOUBLE-FLOAT"])
+              || (defaultFormat == [cl intern:@"LONG-FLOAT"]))))
+    return [MLKDoubleFloat doubleFloatWithIntegerPart:intPart
+                           negative:negative
+                           fractionalPart:fractPart
+                           exponent:exponent
+                           exponentNegative:exponentNegative];
+  else
+    return [MLKSingleFloat singleFloatWithIntegerPart:intPart
+                           negative:negative
+                           fractionalPart:fractPart
+                           exponent:exponent
+                           exponentNegative:exponentNegative];
+}
+@end