PBC Library Manual 0.5.11 - Stanford Crypto Group

Selects a random bits-bit integer z.
6.2. Custom allocation
Chapter 6. Other functions
Like GMP, PBC can be instructed to use custom memory allocation functions. This must be done before
any memory allocation is performed, usually at the beginning of a program before any other PBC
functions have been called.
Also like GMP, the PBC wrappers around malloc and realloc will print a message on standard error
and terminate program execution if the calls fail. Replacements for these functions should act similarly.
However, unlike GMP, PBC does not pass the number of bytes previously allocated along with the
pointer in calls to realloc and free.
void pbc_set_memory_functions(void *(*malloc_fn)(size_t), void *(*realloc_fn)(void *, size_t), void
(*free_fn)(void *))
6.3. Logging
Set custom allocation functions. The parameters must be function pointers to drop-in replacements for malloc,
realloc and free, except that malloc and realloc should terminate the program on failure: they must not return in
this case.
int pbc_set_msg_to_stderr(int i)
By default error messages are printed to standard error. Call pbc_set_msg_to_stderr(0) to suppress
messages.
void pbc_die(const char *err, . . . )
Reports error message and exits with code 128.
void pbc_info(const char *err, . . . )
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