Floating point routines.
------------------------------------------------------------------
FLOATING_ADD
FLOATING_SUB
FLOATING_COMP
FLOATING_MUL
FLOATING_DIV
HEXSCAN
FLOATING_POINT_INPUT			CONVERTS CR TERMINATED ASCII STRING POINTED TO
					BY DPTR AND PUTS IT ON THE FP STACK
FLOATING_POINT_OUTPUT
CONVERT_BINARY_TO_ASCII_STRING
CONVERT_ASCII_STRING_TO_BINARY
MULNUM10
FPHEXOUT
PUSHR2R0				CONVERTS 16 BIT INTEGER ASCII STRING POINTED TO
					BY CONVT to FLOAT ON FP STACK
IFIX					FLOAT to INTEGER
PUSHAS					PUSH R2:R0 TO ARGUMENT
POPAS					POP FP STACK TO R3:R1
MOVAS					COPY FP STACK TO XRAM POINTED TO BY DPTR
AINT					INT FUNCTION
PUSHC					PUSH ARG IN DPTR TO STACK

Formula to calculate Lx.
------------------------------------------------------------------

      -  /    \ 2    -     -  /    \ 2    -               /      \ 2
     |  /  F1  \      |   |  /  F1  \      |     1       /    1   \
Lx = | |--------| - 1 | x | |--------| - 1 | x ------ x |----------|
     |  \  F3  /      |   |  \  F2  /      |    Ccal    \ 2xPixF1 /
      -  \    /      -     -  \    /      -              \       /


Formula to calculate Cx.
------------------------------------------------------------------

        /    \ 2    
       /  F1  \     
      |--------| - 1
       \  F3  /     
        \    /      
Cx = --------------- x Ccal
        /    \ 2    
       /  F1  \     
      |--------| - 1
       \  F2  /     
        \    /      
