Reserved Keywords; Asm Keyword; Ansi C Keywords - Texas Instruments TI-89 Software Manual

Section 2: Compiler
2.6.

Reserved Keywords

Following is the list of reserved C language keywords that the Sierra C compiler
recognizes:
2.6.1.

ASM Keyword

The asm keyword is a standard extension to ANSI C that allows statements to be
inserted directly into compiler-generated assembly code. The asm keyword is
followed by a character string enclosed in parentheses, and it can appear in the
C source file wherever a statement or declaration is allowed. For example, the
following statement causes the instruction enclosed in double quotes to be
inserted into the assembly output at the location that corresponds to the asm
statement's location in the C source:
The integer constant 4 that follows the string indicates the size of the instruction
in bytes. The size argument is optional; if omitted, the instruction is assumed to be
two bytes long. It is necessary to specify the size of the instruction only when the
asm statement appears inside a loop, if statement, switch statement, or
between a goto statement and the label it references. An incorrect or missing
size specification may cause the compiler to generate an improperly sized
branch instruction, which will result in an assembly error.
2.6.2.

ANSI C Keywords

The ANSI C standard added three keywords, const, volatile, and signed, to the
C language. The const and volatile keywords are extremely important to
embedded systems developers. These two keywords are fully described in
sections 2.9.8 Const Type Specifier and 2.9.9 Volatile Type Specifier. The
keyword signed aids in writing portable code. For example, some compilers
recognize objects of type char as signed and others recognize them as
unsigned. The keyword signed can be used in conjunction with the previously
existing keyword unsigned to control the interpretation of certain object
TI-89 / TI-92 Plus Sierra C Assembler Reference Manual
asm double
auto else
break enum
case extern
char float
const for
continue goto
default if
do
asm("move.w #0x2400, sr", 4)
int struct
long switch
register typedef
return union
short unsigned
signed void
sizeof volatile
static while
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Beta Version February 2, 2001