trunc — find the nearest integer less than or equal to the parameter
genType trunc( | genType x); |
genDType trunc( | genDType x); |
x Specify the value to evaluate.
trunc returns a a value equal to the nearest integer to x whose absolute value is not larger than the absolute value of x.
| OpenGL Shading Language Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Function Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50 |
| trunc (genType) | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| trunc (genDType) | - | - | - | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
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