math: add tests for erf and erfc

Test large but not infinite arguments.

This CL adds a test which breaks s390x.  Don't submit until
a fix for that is figured out.

Update #26477

Change-Id: Ic86739fe3554e87d7f8e15482875c198fcf1d59c
Reviewed-on: https://go-review.googlesource.com/125641
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

diff --git a/src/math/all_test.go b/src/math/all_test.go
index 261d20948697e1a9e4a10629332270e8992ad9e5..bcc20a391768087ec7f0b433415fbd8a9f78d954 100644 (file)
--- a/src/math/all_test.go
+++ b/src/math/all_test.go
@@ -946,6 +946,8 @@ var vferfSC = []float64{
        0,
        Inf(1),
        NaN(),
+       -1000,
+       1000,
 }
 var erfSC = []float64{
        -1,
@@ -953,17 +955,23 @@ var erfSC = []float64{
        0,
        1,
        NaN(),
+       -1,
+       1,
 }
 
 var vferfcSC = []float64{
        Inf(-1),
        Inf(1),
        NaN(),
+       -1000,
+       1000,
 }
 var erfcSC = []float64{
        2,
        0,
        NaN(),
+       2,
+       0,
 }
 
 var vferfinvSC = []float64{