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Numeric literals

Numeric literals can take any of the following forms:

decimal-digits

0xhexadecimal-digits

&hexadecimal-digits

n_base-n-digits

'character'

where:

decimal-digits

Is a sequence of characters using only the digits 0 to 9.

hexadecimal-digits

Is a sequence of characters using only the digits 0 to 9 and the letters A to F or a to f.

n_

Is a single digit between 2 and 9 inclusive, followed by an underscore character.

base-n-digits

Is a sequence of characters using only the digits 0 to (n -1)

character

Is any single character except a single quote. Use the standard C escape character (\') if you require a single quote. The character must be enclosed within opening and closing single quotes. In this case the value of the numeric literal is the numeric code of the character.

You must not use any other characters. The sequence of characters must evaluate to an integer.

In A32/T32 code, the integer range is 0 to 232-1, except for the DCQ, DCQU, DCO, and DCOU directives.

In A64 code, the integer range is 0 to 264-1, except for the DCO and DCOU directives.

Note

  • In the DCQ and DCQU directives, the integer range is 0 to 264 -1.

  • In the DCO and DCOU directives, the integer range is 0 to 2128 -1.

Examples

a       SETA    34906

addr    DCD     0xA10E

        LDR     r4,=&1000000F

        DCD     2_11001010

c3      SETA    8_74007

        DCQ     0x0123456789abcdef
        LDR     r1,='A'             ; pseudo-instruction loading 65 into r1
        ADD     r3,r2,#'\''         ; add 39 to contents of r2, result to r3

See also

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