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21 lines
488 B
Markdown
21 lines
488 B
Markdown
## Sign
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Extract the sign of the parameter
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### Declaration
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```glsl
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float sign(float x)
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vec2 sign(vec2 x)
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vec3 sign(vec3 x)
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vec4 sign(vec4 x)
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```
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### Parameters
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```x``` specify the value from which to extract the sign.
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### Description
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```sign()``` returns -1.0 if x is less than 0.0, 0.0 if x is equal to 0.0, and +1.0 if x is greater than 0.0.
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<div class="simpleFunction" data="y = sign(x); "></div>
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### See Also
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[abs](index.html#abs.md), [Chapter 05: Shaping Functions](../05/) |