Constant tracing::stdlib::f128::consts::FRAC_PI_2

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pub const FRAC_PI_2: f128 = 1.57079632679489661923132169163975144209858469968755291048747_f128; // 1.5707963267948966192313216916397514f128
🔬This is a nightly-only experimental API. (f128 #116909)
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π/2