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A.8.7 Numbers</div>
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number ::= </p>
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integral_number </p>
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| real_number </p>
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integral_number ::= </p>
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decimal_number </p>
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| octal_number </p>
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| binary_number </p>
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| hex_number </p>
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decimal_number ::= </p>
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unsigned_number </p>
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| [ size ] decimal_base unsigned_number </p>
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| [ size ] decimal_base x_digit { _ } </p>
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| [ size ] decimal_base z_digit { _ } </p>
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binary_number ::= [ size ] binary_base binary_value </p>
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octal_number ::= [ size ] octal_base octal_value </p>
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hex_number ::= [ size ] hex_base hex_value </p>
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sign ::= + | - </p>
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size ::= non_zero_unsigned_number </p>
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non_zero_unsigned_number1 ::= non_zero_decimal_digit { _ | decimal_digit} </p>
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real_number1 ::= </p>
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fixed_point_number </p>
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| unsigned_number [ . unsigned_number ] exp [ sign ] unsigned_number </p>
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fixed_point_number1 ::= unsigned_number . unsigned_number </p>
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exp ::= e | E </p>
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unsigned_number1 ::= decimal_digit { _ | decimal_digit } </p>
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binary_value1 ::= binary_digit { _ | binary_digit } </p>
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octal_value1 ::= octal_digit { _ | octal_digit } </p>
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hex_value1 ::= hex_digit { _ | hex_digit } </p>
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decimal_base1 ::= ’[s|S]d | ’[s|S]D </p>
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binary_base1 ::= ’[s|S]b | ’[s|S]B </p>
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octal_base1 ::= ’[s|S]o | ’[s|S]O </p>
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hex_base1 ::= ’[s|S]h | ’[s|S]H </p>
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non_zero_decimal_digit ::= 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 </p>
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decimal_digit ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 </p>
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binary_digit ::= x_digit | z_digit | 0 | 1 </p>
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octal_digit ::= x_digit | z_digit | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 </p>
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hex_digit ::= x_digit | z_digit | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | d | e | f | A | B | C | D | E | F </p>
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x_digit ::= x | X </p>
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z_digit ::= z | Z | ? </p>
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unbased_unsized_literal ::= '0 | '1 | 'z_or_x 10</p></div>
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