BOOL ERCON - errors by default generate an error message and immediately abort the program. Alternatively by setting mip->ERCON=TRUE error control is left to the user.
int ERNUM - number of the last error that occurred.
BOOL EXACT - initialised to TRUE. Set to FALSE if any rounding takes place during flash arithmetic.
int INPLEN - length of input string. Must be used when inputting binary data.
int IOBASE - the 'printable' number base to be used for input and output. May be changed at will within a program. Must be greater than or equal to 2 and less than or equal to 256.
int IOBSIZ – size of I/O buffer.
char* IOBUFF – input/output buffer.
int NTRY - number of iterations used in probabilistic primality test by isprime(). Initialised to 6.
int* PRIMES – pointer to a table of small prime numbers.
BOOL RPOINT - if set to ON numbers are output with a radix point. Otherwise they are output as fractions (the default).
BOOL TRACER - if set to ON causes debug information to be printed out, tracing the progress of all subsequent calls to MIRACL routines. Initialised to OFF.