1 files changed, 29 insertions, 0 deletions
diff --git a/v_windows/v/vlib/math/erf_test.v b/v_windows/v/vlib/math/erf_test.v
new file mode 100644
index 0000000..2102514
--- /dev/null
+++ b/v_windows/v/vlib/math/erf_test.v
@@ -0,0 +1,29 @@
+module math
+
+fn test_erf() {
+	assert is_nan(erf(nan()))
+	assert tolerance(erf(-1.0), -0.8427007888650501, 1e-8)
+	assert tolerance(erf(0.0), 0.0, 1e-11)
+	assert tolerance(erf(1e-15), 0.0000000000000011283791670955126615773132947717431253912942469337536,
+		1e-11)
+	assert tolerance(erf(0.1), 0.11246291601917208, 1e-11)
+	assert tolerance(erf(0.3), 0.32862677677789676, 1e-7)
+	assert tolerance(erf(0.5), 0.5204998778130465376827466538919645287364515757579637,
+		1e-9)
+	assert tolerance(erf(1.0), 0.8427007888650501, 1e-8)
+	assert tolerance(erf(1.5), 0.966105146259005, 1e-9)
+	assert tolerance(erf(6.0), 0.99999999999999997848026328750108688340664960081261537,
+		1e-12)
+	assert tolerance(erf(5.0), 0.99999999999846254020557196514981165651461662110988195,
+		1e-12)
+	assert tolerance(erf(4.0), 0.999999984582742, 1e-12)
+	assert tolerance(erf(inf(1)), 1.0, 1e-12)
+	assert tolerance(erf(inf(-1)), -1.0, 1e-12)
+}
+
+fn test_erfc() {
+	assert tolerance(erfc(-1.0), 1.84270078886505, 1e-8)
+	assert tolerance(erfc(0.0), 1.0, 1e-11)
+	assert tolerance(erfc(0.1), 0.8875370839808279, 1e-11)
+	assert tolerance(erfc(0.2), 0.7772974103342554, 1e-9)
+}