CCS C Compiler Manual PCB / PCM / PCH

Structures & Unions
typedef
Named Registers
Type Specifiers
Basic Types
Range
Type-Specifier
Size Unsigned Signed Digits
N/A
int1 1 bit number 0 to 1
1/2
int8 8 bit number 0 to 255
int16 16 bit number 0 to 65535
-128 to 127
-32768 to 32767
2-3
4-5
-2147483648 to 2147483647
int32 32 bit number 0 to 4294967295
9-10
float32
32 bit float -1.5 x 10 45 to 3.4 x 10 38 7-8
C Standard Type
short
char
int
long
long long
float
double
Default Type
int1
unsigned int8
int8
int16
int32
float32
N/A
Note: All types, except float char , by default are un-signed; however, may be
preceded by unsigned or signed (Except int64 may only be signed) . Short and long
may have the keyword INT following them with no effect. Also see #TYPE to
change the default size.
SHORT INT1 is a special type used to generate very efficient code for bit operations
and I/O. Arrays of bits (INT1 or SHORT ) in RAM are now supported. Pointers to
bits are not permitted. The device header files contain defines for BYTE as an int8
and BOOLEAN as an int1.
Integers are stored in little endian format. The LSB is in the lowest address. Float
formats are described in common questions.
SEE ALSO: Declarations, Type Qualifiers, Enumerated Types, Structures & Unions,
typedef, Named Registers
28