# SDL_size_mul_overflow

If a * b would overflow, return -1.

## Header File

Defined in [SDL_stdinc.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_stdinc.h)

## Syntax

```c
SDL_FORCE_INLINE int SDL_size_mul_overflow (size_t a, size_t b, size_t *ret);
```

## Function Parameters

|          |         |                                                           |
| -------- | ------- | --------------------------------------------------------- |
| size_t   | **a**   | the multiplicand.                                         |
| size_t   | **b**   | the multiplier.                                           |
| size_t * | **ret** | on non-overflow output, stores the multiplication result. |

## Return Value

(int) Returns -1 on overflow, 0 if result is multiplied without overflow.

## Remarks

Otherwise store a * b via ret and return 0.

## Version

This function is available since SDL 2.24.0.

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[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryStdInc](CategoryStdInc)