----------------------------------
		gcd.c
----------------------------------
	invert:
line 29: second argument to xalloc missing

----------------------------------
		madd.c
----------------------------------
	msub:
lines 144-145 silly but harmless

----------------------------------
		mdiv.c
----------------------------------
	mdiv:
xfrees q and r prematurely (only a problem when doing mdiv(a,b,a,c), etc.
	m_div:
has some inefficiencies, but works

----------------------------------
		mout.c
----------------------------------
	m_in:
ungetc's extra character read on stdin instead of input file "f"
doesn't always free space taken up by "x"
miscellaneous white-space processing problems
bases > 10 not handled properly

	m_out:
octal output inefficient
space allocated is insufficient for bases < 8 [?]
bases > 10 not handled properly

	sdiv, s_div:
don't check for zero divisors

----------------------------------
		msqrt.c
----------------------------------
	msqrt:
loop manipulations are inefficient

----------------------------------
		pow.c
----------------------------------
	pow:
frees d prematurely

	rpow:
very inefficient:  generates a huge number for a modulus
			and then calls on pow

----------------------------------
		util.c
----------------------------------
	itom:
assumes int and short are the same