serde
1.0.216
In serde::
lib::
f64::
consts
Constant
serde
::
lib
::
f64
::
consts
::
LN_2
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pub const LN_2:
f64
= 0.693147180559945309417232121458176568_f64; // 0.69314718055994529f64
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ln(2)