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Prevent exp underflow.

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Stephen Chung 2021-05-23 11:54:40 +08:00
parent d07d4d295d
commit 98a232cb8c
1 changed files with 2 additions and 0 deletions
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2
src/packages/math_basic.rs
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@ -319,6 +319,8 @@ mod decimal_functions {
if cfg!(not(feature = "unchecked")) { if cfg!(not(feature = "unchecked")) {
if x > Decimal::from_parts(117578, 0, 0, false, 4) { if x > Decimal::from_parts(117578, 0, 0, false, 4) {
Err(make_err(format!("Exponential overflow: e ** {}", x,))) Err(make_err(format!("Exponential overflow: e ** {}", x,)))
} else if x < Decimal::from_parts(8, 0, 0, true, 0) {
Err(make_err(format!("Exponential underflow: e ** {}", x,)))
} else { } else {
Ok(x.exp()) Ok(x.exp())
} }