diff --git a/testdata/builtin_atan.golden b/testdata/builtin_atan.golden
index f445930..43acef3 100644
--- a/testdata/builtin_atan.golden
+++ b/testdata/builtin_atan.golden
@@ -1 +1 @@
-0.78539816339744828
+"0.785398163397448"
diff --git a/testdata/builtin_atan.jsonnet b/testdata/builtin_atan.jsonnet
index 36c2013..a8f2e03 100644
--- a/testdata/builtin_atan.jsonnet
+++ b/testdata/builtin_atan.jsonnet
@@ -1 +1,2 @@
-std.atan(1)
+local tolerance = (import 'tolerance.libsonnet').tolerance;
+tolerance(std.atan(1))
diff --git a/testdata/builtin_tan.golden b/testdata/builtin_tan.golden
index df7ba92..f5ec57a 100644
--- a/testdata/builtin_tan.golden
+++ b/testdata/builtin_tan.golden
@@ -1 +1 @@
-1.5574077246549021
+"1.557407724654902"
diff --git a/testdata/builtin_tan.jsonnet b/testdata/builtin_tan.jsonnet
index c45322d..dfcb3ba 100644
--- a/testdata/builtin_tan.jsonnet
+++ b/testdata/builtin_tan.jsonnet
@@ -1 +1,2 @@
-std.tan(1)
+local tolerance = (import 'tolerance.libsonnet').tolerance;
+tolerance(std.tan(1))
diff --git a/testdata/pow5.golden b/testdata/pow5.golden
index 065bb28..a3c69b0 100644
--- a/testdata/pow5.golden
+++ b/testdata/pow5.golden
@@ -1 +1 @@
-1.1486983549970351
+"1.148698354997035"
diff --git a/testdata/pow5.jsonnet b/testdata/pow5.jsonnet
index d1230be..bc7dd04 100644
--- a/testdata/pow5.jsonnet
+++ b/testdata/pow5.jsonnet
@@ -1 +1,2 @@
-std.pow(2, 0.2)
+local tolerance = (import 'tolerance.libsonnet').tolerance;
+tolerance(std.pow(2, 0.2))
diff --git a/testdata/tolerance.libsonnet b/testdata/tolerance.libsonnet
new file mode 100644
index 0000000..2f4920d
--- /dev/null
+++ b/testdata/tolerance.libsonnet
@@ -0,0 +1,7 @@
+{
+    // Formats a floating point number to get 15 digits
+    // after the decimal point. It is used for some tests
+    // of numeric functions, where a range of values is 
+    // acceptable, due to differences in cpu architecture.
+    tolerance(x):: "%.15f" % x
+}