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ci: Use -x instead of -1.0 * x #347

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Merged
YeungOnion merged 1 commit into from
Jul 25, 2025
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ci: Use -x instead of -1.0 * x #347

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12 changes: 6 additions & 6 deletions src/function/exponential.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@ pub fn integral(x: f64, n: u64) -> Option<f64> {

// special cases
if n == 0 {
return Some((-1.0 * x).exp() / x);
return Some((-x).exp() / x);
}
if x == 0.0 {
return Some(1.0 / (nf64 - 1.0));
Expand All @@ -44,7 +44,7 @@ pub fn integral(x: f64, n: u64) -> Option<f64> {
let mut d = 1.0 / b;
let mut h = d;
for i in 1..max_iter + 1 {
let a = -1.0 * i as f64 * (nf64 - 1.0 + i as f64);
let a = -(i as f64) * (nf64 - 1.0 + i as f64);
b += 2.0;
d = 1.0 / (a * d + b);
c = b + a / c;
Expand All @@ -60,18 +60,18 @@ pub fn integral(x: f64, n: u64) -> Option<f64> {
let mut result = if n - 1 != 0 {
1.0 / (nf64 - 1.0)
} else {
-1.0 * x.ln() - consts::EULER_MASCHERONI
-x.ln() - consts::EULER_MASCHERONI
};
for i in 1..max_iter + 1 {
factorial *= -1.0 * x / i as f64;
factorial *= -x / i as f64;
let del = if i != n - 1 {
-factorial / (i as f64 - nf64 + 1.0)
} else {
let mut psi = -1.0 * consts::EULER_MASCHERONI;
let mut psi = -consts::EULER_MASCHERONI;
for ii in 1..n {
psi += 1.0 / ii as f64;
}
factorial * (-1.0 * x.ln() + psi)
factorial * (-x.ln() + psi)
};
result += del;
if del.abs() < result.abs() * eps {
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