/usr/include/nacl/crypto_int16.h is in libnacl-dev 20110221-4.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | #ifndef crypto_int16_h
#define crypto_int16_h
typedef short crypto_int16;
#endif
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