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Floating-point Math Instructions Section 3-14
The Equals Flag will only turn ON when both the exponent (e) and the man-
tissa (f) are zero after a calculation. A calculation result will also be output as
zero when the absolute value of the result is less than the minimum value that
can be expressed for floating-point data. In that case the Underflow Flag will
turn ON.
Example In this program example, the X-axis and Y-axis coordinates (x, y) are provided
by 4-digit BCD content of D0 and D1. The distance (r) from the origin and the
angle (
θ, in degrees) are found and output to D100 and D101. In the result,
everything to the right of the decimal point is truncated.
0
y
x
P (100, 100)
r
θ
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