View source for Atomic Variable Operations

All of the atomic functions return the '''''original''''' value. The term "''n''int" can be {{code|int}} or {{code|uint}}.

{{funcdef|''n''int atomicAdd(inout ''n''int {{param|mem}}, ''n''int {{param|data}})}}

Adds {{param|data}} to {{param|mem}}.

{{funcdef|''n''int atomicMin(inout ''n''int {{param|mem}}, ''n''int {{param|data}})}}

The {{param|mem}}'s value is no lower than {{param|data}}.

{{funcdef|''n''int atomicMax(inout ''n''int {{param|mem}}, ''n''int {{param|data}})}}

The {{param|mem}}'s value is no greater than {{param|data}}.

{{funcdef|''n''int atomicAnd (inout ''n''int {{param|mem}}, ''n''int {{param|data}})}}

{{param|mem}} becomes the bitwise-and between {{param|mem}} and {{param|data}}.

{{funcdef|''n''int atomicOr(inout ''n''int {{param|mem}}, ''n''int {{param|data}})}}

{{param|mem}} becomes the bitwise-or between {{param|mem}} and {{param|data}}.

{{funcdef|''n''int atomicXor(inout ''n''int {{param|mem}}, ''n''int {{param|data}})}}

{{param|mem}} becomes the bitwise-xor between {{param|mem}} and {{param|data}}.

{{funcdef|''n''int atomicExchange(inout ''n''int {{param|mem}}, ''n''int {{param|data}})}}

Sets {{param|mem}}'s value to {{param|data}}.

{{funcdef|''n''int atomicCompSwap(inout ''n''int {{param|mem}}, ''n''int {{param|compare}}, ''n''int {{param|data}})}}

If the current value of {{param|mem}} is equal to {{param|compare}}, then {{param|mem}} is set to {{param|data}}. Otherwise it is left unchanged.