1 files changed, 13 insertions, 0 deletions
diff --git a/em.awk b/em.awk
new file mode 100644
index 0000000..1297153
--- /dev/null
+++ b/em.awk
@@ -0,0 +1,13 @@
+#!/usr/bin/awk -f
+
+BEGIN {
+    ARGV[1] ? OFMT = "%." ARGV[1] "g" : OFMT = "%.12g"
+
+    ### constants
+    pi = 4.0*atan2(1,1)         # rad
+    c0 = 299792458E0            # m/s, exact
+    mu0 = (4.0E-7)*pi           # H/m
+    epsilon0 = (mu0*c0^2)^-1    # F/m
+
+    print pi, c0, mu0, epsilon0
+}