IBM 5100 User Manual

APL Floating-Point
The APL floating-point data format
is a method of storing
arithmetic
data and is always 8 bytes long. The format of
the 8 bytes is:
Byte
o
o
1-7
6-10
Bit
o
1-7
Description
Indicates the sign
of the arith-
metic data.
If bit 0 is off, the
number is positive; if bit 0 is on,
the number
is negative.
Hex value indicating the direction
to move the hexadecimal point
and how far.
Hex value of the arithmetic data.
If the value specified in bits 1-7 of byte 0 is greater than
hex
40, subtract hex 40 from that value. The difference is
the number of half bytes (hex digits) to move the hexadeci-
mal point to the right. If the value specified in bits 1-7 of
byte 0 is less than hex 40, subtract that number from hex
40. The difference is the number of half bytes to move the
hexadecimal
point to the left.
'", /'

IBM 5100 Specifications

General

Brand	IBM
Model	5100
Category	Laptop
Language	English