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Java > Open Source Codes > gov > nasa > jpf > jvm > JPF_java_lang_Float


1 //
2 // Copyright (C) 2005 United States Government as represented by the
3 // Administrator of the National Aeronautics and Space Administration
4 // (NASA). All Rights Reserved.
5 //
6 // This software is distributed under the NASA Open Source Agreement
7 // (NOSA), version 1.3. The NOSA has been approved by the Open Source
8 // Initiative. See the file NOSA-1.3-JPF at the top of the distribution
9 // directory tree for the complete NOSA document.
10 //
11 // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12 // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13 // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14 // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15 // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16 // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17 // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18 //
19
20 package gov.nasa.jpf.jvm;
21
22 /**
23  * MJI NativePeer class for java.lang.Float library abstraction
24  */
25 public class JPF_java_lang_Float {
26   public static int floatToIntBits (MJIEnv env, int rcls, float v0) {
27     return Float.floatToIntBits(v0);
28   }
29
30   public static int floatToRawIntBits (MJIEnv env, int rcls, float v0) {
31     return Float.floatToRawIntBits(v0);
32   }
33
34   public static float intBitsToFloat (MJIEnv env, int rcls, int v0) {
35     return Float.intBitsToFloat(v0);
36   }
37   
38   // we need to intercept this because it compares double values, which might
39 // cause an ArithmeticException to be raised if -check-fp-compare is set (default)
40 // but -check-fp isn't, and Double.isInfinit is used to handle the cases
41 // explicitly in the program (which is supposed to be the right way)
42 public static boolean isInfinite__D (MJIEnv env, int rcls, float v) {
43     return Float.isInfinite(v);
44   }
45   
46   // ditto (see isInfinite)
47 public static boolean isNaN__D (MJIEnv env, int rcls, float v) {
48     return Float.isNaN(v);
49   }
50 }
51
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