Zilog Z8F0130 - Manual (Page 315)

UM013037-1212 Decimal Numbers
Zilog Developer Studio II – Z8 Encore!
User Manual
291
Decimal Numbers
Decimal numbers are signed 32-bit integers consisting of the characters 0 – 9 inclusive
between -2147483648 and 2147483647 . Positive numbers are indicated by the absence
of a sign. Negative numbers are indicated by a minus sign ( - ) preceding the number.
Underscores (_) can be inserted between digits to improve readability.
For example:
1234 ; decimal

-123_456 ; negative decimal

1_000_000; decimal number with underscores

_123_; NOT an integer but a name. Underscore can be neither first

nor last character.

12E-45 ; decimal float

-123.456 ; decimal float

123.45E6 ; decimal float
Hexadecimal Numbers
Hexadecimal numbers are signed 32-bit integers ending with the h or H suffix (or starting
with the % prefix) and consisting of the characters 0 – 9 and A – F . A hexadecimal number
can have 1 to 8 characters. Positive numbers are indicated by the absence of a sign. Nega-
tive numbers are indicated by a minus sign (
- ) preceding the number. Underscores (_) can
be inserted between hexadecimal digits to improve readability, but only when the % prefix
is used instead of the H suffix.
For example:
ABCDEFFFH ; hexadecimal

%ABCDEFFF ; hexadecimal

-0FFFFh ; negative hexadecimal

%ABCD_EFFF; hexadecimal number with underscore

ADC0D_H; NOT a hexadecimal number but a name

; underscores not allowed with the H suffix
Binary Numbers
Binary numbers are signed 32-bit integers ending with the character b or B and consisting
of the characters 0 and 1 . A binary number can have 32 characters. Positive numbers are
indicated by the absence of a sign. Negative numbers are indicated by a minus sign ( - )
preceding the number. Underscores (_) can be inserted between binary digits to improve
readability.
For example:
-0101b ; negative binary number

0010_1100_1010_1111B; binary number with underscores