ABS
int abs(int ival)
	Obtains absolute value of an int.
DIV
struct div_t div(int number, int denom)
	Provide quotient and remainder of number pair. <stdlib.h>
	See p.24.
LABS
long labs(long lval)
	Obtains absolute value of a long int.
LDIV
ldiv_t ldiv(long number, long denom)
	Provides quotient and remainder of number pair. <stdlib.h>
	See p.24.
LPOWER
long lpower(long base, pwr)
	Raise long int to long int power.
RAND
int rand()
	Obtains pseudo-random number (0 to 32767)
SRAND
void srand(unsigned int seed)
	Seeds rand() pseudo-random number generator.
