# Add64

Adds two 64-bit integers together.

### Synopsis

`void Add64( int64 *r, int64 *a1, int64 *a2 )`

### Description

This function adds two 64-bit integers together and returns the result. The value deposited in r is the sum of the arguments. This function is actually the same function as `AddF32()`.

### Arguments

r
  A pointer to a 64-bit integer structure to store the result.

a1, a2
  Pointers to 64-bit integer addends.

### Implementation

Folio call implemented in operamath V20.

### Associated Files

operamath.h, operamath.lib

### See Also

``AddF32`(), AddF60()`