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1 /**************************************************************************
2  *
3  * Copyright 2013 VMware, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 
28 /**
29  * @file
30  * Helper arithmetic functions with support for overflow detection
31  * and reporting.
32  *
33  * @author Zack Rusin <zackr@vmware.com>
34  */
35 
36 
37 #ifndef LP_BLD_ARIT_OVERFLOW_H
38 #define LP_BLD_ARIT_OVERFLOW_H
39 
40 
41 #include "gallivm/lp_bld.h"
42 
43 struct gallivm_state;
44 
45 LLVMValueRef
46 lp_build_uadd_overflow(struct gallivm_state *gallivm,
47                        LLVMValueRef a,
48                        LLVMValueRef b,
49                        LLVMValueRef *ofbit);
50 
51 LLVMValueRef
52 lp_build_usub_overflow(struct gallivm_state *gallivm,
53                        LLVMValueRef a,
54                        LLVMValueRef b,
55                        LLVMValueRef *ofbit);
56 
57 LLVMValueRef
58 lp_build_umul_overflow(struct gallivm_state *gallivm,
59                        LLVMValueRef a,
60                        LLVMValueRef b,
61                        LLVMValueRef *ofbit);
62 
63 #endif /* !LP_BLD_ARIT_OVERFLOW_H */
64