MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

16-Bit C Compiler User’s Guide
__builtin_divmodud
Description: Issues the 16-bit architecture’s native unsigned divide support with the
same restrictions given in the “dsPIC30F/33F Programmer’s Reference
Manual” (DS70157). Notably, if the quotient does not fit into a
16-bit result, the results (including remainder) are unexpected. This
form of the builtin function will capture both the quotient and remainder.
Prototype: unsigned int __builtin_divmodud(
unsigned long dividend, unsigned int divisor,
unsigned int *remainder);
Argument: dividendnumber to be divided
divisornumber to divide by
remainderpointer to remainder
Return Value: Quotient and remainder.
Assembler Opera- divmodud
tor / Machine
Instruction:
Error Messages None.
__builtin_divsd
Description: Computes the quotient num / den. A math error exception occurs if den
is zero. Function arguments are signed, as is the function result. The
command-line option -Wconversions can be used to detect unexpected
sign conversions.
Prototype: int __builtin_divsd(const long num, const int den);
Argument: num numerator
den denominator
Return Value: Returns the signed integer value of the quotient num / den.
Assembler Operator
/ Machine
Instruction:
div.sd
__builtin_divud
Description: Computes the quotient num / den. A math error exception occurs if den
is zero. Function arguments are unsigned, as is the function result. The
command-line option -Wconversions can be used to detect unexpected
sign conversions.
Prototype: unsigned int __builtin_divud(const unsigned
long num, const unsigned int den);
Argument: num numerator
den denominator
Return Value: Returns the unsigned integer value of the quotient num / den.
Assembler Operator
/ Machine
Instruction:
div.ud
DS51284G-page 146 © 2008 Microchip Technology Inc.