1 use super::{exp2, exp2f, modff};
2
3 const LN10_F32: f32 = 3.32192809488736234787031942948939;
4 const LN10_F64: f64 = 3.32192809488736234787031942948939;
5 const P10: &[f32] = &[
6 1e-7, 1e-6, 1e-5, 1e-4, 1e-3, 1e-2, 1e-1, 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7,
7 ];
8
9 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
exp10f(x: f32) -> f3210 pub fn exp10f(x: f32) -> f32 {
11 let (mut y, n) = modff(x);
12 let u = n.to_bits();
13 /* fabsf(n) < 8 without raising invalid on nan */
14 if (u >> 23 & 0xff) < 0x7f + 3 {
15 if y == 0.0 {
16 return i!(P10, ((n as isize) + 7) as usize);
17 }
18 y = exp2f(LN10_F32 * y);
19 return y * i!(P10, ((n as isize) + 7) as usize);
20 }
21 return exp2(LN10_F64 * (x as f64)) as f32;
22 }
23