1  /*
 2   *  Bean Java VM
 3   *  Copyright (C) 2005-2015 Christian Lins <christian@lins.me>
 4   *
 5   *  Licensed under the Apache License, Version 2.0 (the "License");
 6   *  you may not use this file except in compliance with the License.
 7   *  You may obtain a copy of the License at
 8   *
 9   *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  
18  #include <debug.h>
19  #include <vm.h>
20  
21  /* Negates the double value on top of the operand stack. */
22  void do_DNEG(Thread *thread) {
23      dbgmsg("DNEG");
24  
25      double *value = (double *) current_frame(thread)->operandStack.top->data;
26  
27      *value = -(*value); /* Negate the value */
28  }
29  
30  /* Negates the float value on top of the operand stack. */
31  void do_FNEG(Thread *thread) {
32      dbgmsg("FNEG");
33  
34      float *value = (float *) current_frame(thread)->operandStack.top->data;
35      ;
36  
37      *value = -(*value); /* Negate the value */
38  }
39  
40  /* Negates the int value on top of the operand stack. */
41  void do_INEG(Thread *thread) {
42      dbgmsg("INEG");
43  
44      int32_t *value = (int32_t*) current_frame(thread)->operandStack.top->data;
45  
46      *value = -(*value); /* Negate the value */
47  }
48  
49  /* Negates the long value on top of the operand stack. */
50  void do_LNEG(Thread *thread) {
51      dbgmsg("LNEG");
52  
53      int64_t *value = (int64_t *) current_frame(thread)->operandStack.top->data;
54  
55      *value = -(*value); /* Negate the value */
56  }