28.2.64 __builtin_lac

Architecture

dsPIC33C/E/F, dsPIC30

Description

Shifts value by shift (a literal between -8 and 7) and returns the value to be stored into the accumulator register. For example:

 volatile register int16_t result asm("A"); 
 int16_t value;

 result = __builtin_lac(value,3);

Prototype

int16_t __builtin_lac(int16_t value, int16_t shift);

Arguments

value – Integer number to be shifted.

shift – Literal amount to shift.

Return Value

Returns the shifted result to an accumulator.

Machine Instruction

lac

Error Messages

An error message will be displayed if:

• the result is not an accumulator register
• the shift value is not a literal within range