std
1.80.0
(051478957 2024-07-21)
In std::f64::consts
Constant
std
::
f64
::
consts
::
FRAC_PI_4
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1.0.0
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pub const FRAC_PI_4:
f64
= 0.785398163397448309615660845819875721_f64; // 0.78539816339744828f64
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π/4