Texas Instruments TMS320C3 Series, User Manual, Page: 72 / 166

Constants
5-8
5.2 Constants
The assembler supports five types of constants:
-
Binary integer constants
-
Decimal integer constants
-
Hexadecimal integer constants
-
Floating-point constants
-
Character constants
The assembler maintains each constant internally as a 32-bit quantity.
Constants
are not sign extended. For example, the constant 0FFh is equal to
00FF (base 16) or 255 (base 10); it
does not equal –1.
Binary integers
A binary integer constant is a string of 0s and 1s followed by the suffix B (or
b). Examples of valid binary constants include:
0101b Constant equal to 5
10101B Constant equal to 21
–0101b Constant equal to –5
Decimal integers
A decimal integer constant is a string of decimal digits, ranging from
–2 147 483 647 to 4 294 967 295. Examples of valid decimal constants in-
clude:
1000 Constant equal to 1 000
10
or 3E8
16
–32768 Constant equal to –32 768
10
or 8000
16
25 Constant equal to 25
10
or 19
16
Hexadecimal integers
A hexadecimal integer constant is a string of up to eight hexadecimal digits fol-
lowed by the suffix H (or h) or preceded by the prefix 0x. Hexadecimal digits
include the decimal values 0–9 and the letters A–F or a–f.
A hexadecimal
constant must begin with a decimal value (0–9). Examples of valid hexadeci-
mal constants include:
78H Constant equal to 120
10
or 0078
16
0x0f Constant equal to 15
10
or 000F
16
37ACh Constant equal to 14 252
10
or 37AC
16