2443fe807a
odk directory copied from wvgerrit. branch oemcrypto-v16 commit 0c9a7dc Bug: 140758896 Test: odk_test Change-Id: I0c631f771b794468a63e4395f6b9c3b60a1dfd4f
34 lines
832 B
C
34 lines
832 B
C
/*
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* Copyright 2019 Google LLC. All Rights Reserved. This file and proprietary
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* source code may only be used and distributed under the Widevine Master
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* License Agreement.
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*/
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#ifndef ODK_OVERFLOW_H_
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#define ODK_OVERFLOW_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef __has_builtin
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# define __has_builtin(x) 0
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#endif
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#if (defined(__GNUC__) && __GNUC__ >= 5) || \
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__has_builtin(__builtin_add_overflow)
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# define odk_sub_overflow_u64 __builtin_sub_overflow
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# define odk_add_overflow_u64 __builtin_add_overflow
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# define odk_add_overflow_ux __builtin_add_overflow
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#else
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int odk_sub_overflow_u64(uint64_t a, uint64_t b, uint64_t* c);
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int odk_add_overflow_u64(uint64_t a, uint64_t b, uint64_t* c);
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int odk_add_overflow_ux(size_t a, size_t b, size_t* c);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ODK_OVERFLOW_H_ */
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