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use traits::{MatrixGet, MatrixShape};
pub trait MatrixReduce
{
fn min(&self) -> Option<(usize, f64)>;
fn max(&self) -> Option<(usize, f64)>;
}
impl<T: MatrixGet<usize> + MatrixShape>
MatrixReduce for
T
{
fn min(&self) -> Option<(usize, f64)>
{
let l = self.len();
if l == 0
{
None
}
else
{
let mut ret = self.get(0);
let mut ret_i = 0;
for i in 1..l
{
unsafe
{
let c = self.unsafe_get(i);
if c < ret
{
ret = c;
ret_i = i;
}
}
}
Some((ret_i, ret))
}
}
fn max(&self) -> Option<(usize, f64)>
{
let l = self.len();
if l == 0
{
None
}
else
{
let mut ret = self.get(0);
let mut ret_i = 0;
for i in 1..l
{
unsafe
{
let c = self.unsafe_get(i);
if c > ret
{
ret = c;
ret_i = i;
}
}
}
Some((ret_i, ret))
}
}
}