CCS C Compiler Manual PCB / PCM / PCH

swap( )
Syntax:
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
Example Files:
Also See:
swap (lvalue)
lvalue is a byte variable
undefined - WARNING: this function does not return the result
Swaps the upper nibble with the lower nibble of the specified byte. This is the
same as:
byte = (byte > 4);
All devices.
Nothing
x=0x45;
swap(x);
//x now is 0x54
None
rotate_right(), rotate_left()
tolower( ) toupper( )
Syntax:
Parameters:
Returns:
Function:
result = tolower (cvalue)
result = toupper (cvalue)
cvalue is a character
An 8 bit character
These functions change the case of letters in the alphabet.
TOLOWER(X) will return 'a'..'z' for X in 'A'..'Z' and all other characters are
unchanged. TOUPPER(X) will return 'A'..'Z' for X in 'a'..'z' and all other
characters are unchanged.
Availability:
All devices.
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