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thebookofshaders/glossary/all.md

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## Any
Check whether any element of a boolean vector is true
### Declaration
```glsl
bool all(bvec2 x)
bool all(bvec3 x)
bool all(bvec4 x)
```
### Parameters
```x``` specifies the vector to be tested for truth.
### Description
```any()``` returns true if any element of ```x``` is ```true``` and ```false``` otherwise. It is functionally equivalent to:
```glsl
bool any(bvec x) { // bvec can be bvec2, bvec3 or bvec4
bool result = false;
int i;
for (i = 0; i < x.length(); ++i) {
result |= x[i];
}
return result;
}
```
### See Also
[any()](index.html#any.md), [not()](index.html#not.md)