Commit ffb3b369 authored by Alexander Döring's avatar Alexander Döring Committed by Robert Griesemer

math: add more tests for special cases of Bessel functions Y0, Y1, Yn

Test finite negative x with Y0(-1), Y1(-1), Yn(2,-1), Yn(-3,-1).

Also test the special case Yn(0,0).

Fixes #19130.

Change-Id: I95f05a72e1c455ed8ddf202c56f4266f03f370fd
Reviewed-on: https://go-review.googlesource.com/37310Reviewed-by: default avatarRobert Griesemer <gri@golang.org>
parent dc6af19f
......@@ -1742,30 +1742,35 @@ var vfy0SC = []float64{
0,
Inf(1),
NaN(),
-1,
}
var y0SC = []float64{
NaN(),
Inf(-1),
0,
NaN(),
NaN(),
}
var y1SC = []float64{
NaN(),
Inf(-1),
0,
NaN(),
NaN(),
}
var y2SC = []float64{
NaN(),
Inf(-1),
0,
NaN(),
NaN(),
}
var yM3SC = []float64{
NaN(),
Inf(1),
0,
NaN(),
NaN(),
}
// arguments and expected results for boundary cases
......@@ -2716,6 +2721,9 @@ func TestYn(t *testing.T) {
t.Errorf("Yn(-3, %g) = %g, want %g", vfy0SC[i], f, yM3SC[i])
}
}
if f := Yn(0, 0); !alike(Inf(-1), f) {
t.Errorf("Yn(0, 0) = %g, want %g", f, Inf(-1))
}
}
// Check that math functions of high angle values
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment