as: Integers

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1 3.6.2.1 Integers
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1 A binary integer is '0b' or '0B' followed by zero or more of the binary
1 digits '01'.
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1    An octal integer is '0' followed by zero or more of the octal digits
1 ('01234567').
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1    A decimal integer starts with a non-zero digit followed by zero or
1 more digits ('0123456789').
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1    A hexadecimal integer is '0x' or '0X' followed by one or more
1 hexadecimal digits chosen from '0123456789abcdefABCDEF'.
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1    Integers have the usual values.  To denote a negative integer, use
11 the prefix operator '-' discussed under expressions (⇒Prefix
 Operators Prefix Ops.).
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