Luna::atom_compare_exchange_u32
u32 atom_compare_exchange_u32(u32 volatile *dst, u32 exchange, u32 comperand)
Atomically compares the value of the variable with the specified comperand, and sets the variable to the specified value if equal.
Parameters
-
in dst
The pointer to the variable that needs to be compared.
-
in exchange
The value to set to the variable if
*dst == comperand. -
in comperand
The value to compare with.
Return value
Returns the value of the variable before this operation took place.
Remark
See remarks of atom_compare_exchange_i32 for details.