From: Szabolcs Nagy <nsz@port70.net>
Date: Wed, 3 Jul 2013 20:08:26 +0000 (+0000)
Subject: math: add readme about ulp check tool
X-Git-Url: http://nsz.repo.hu/git/?p=libc-test;a=commitdiff_plain;h=e248db1c46f61cf34548e739bc6ff106013b1ba2

math: add readme about ulp check tool
---

diff --git a/src/math/gen/README b/src/math/gen/README
new file mode 100644
index 0000000..b156b20
--- /dev/null
+++ b/src/math/gen/README
@@ -0,0 +1,8 @@
+tools for generating testcases and checking ulp error of math functions
+
+gen: math functions implemented with mpfr
+mgen: math functions from libm
+check: compare input to libm and report errors
+
+# check asinh in the [0.125,0.5] domain over 100k points and report >1.5ulp errors
+./rnd -a 0x1p-3 -b 0x1p-1 -n 100000 |./gen asinh |./check asinh 1.5