Radio Shack TRS-80 Model 3 - Page 124

TRS-SO MODEL III
Addition
The + operatoris the symbol for addition. The addition is done with the precision
of the more precise operand (the less precise operand is converted).
Forexample, when one operand is integer type and the other
is single-precision, the
integeris converted to single-precision and four-byte addition
is done. When one
operand is single-precision and the other
is double-precision, the single-precision
numberis converted to double-precision and eight-byte addition is done.
Examples:
PRINT 2+3
Integeraddition.
PRINT 3.1 + 3
Single-precision addition.
PRINT 1.2345678901234567 + 1
Double-precision addition.
Subtraction
The - operatoris the symbol for subtraction. As with addition, the operation is
done with the precision
of the more precise operand (the less precise operand is
converted).
Examples:
PRINT 33 - 11
Integersubtraction.
PRINT 33 11.1
Single-precision subtraction.
PRINT 12.345678901234567 11
Double-precision subtraction.
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