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diff general/numerical/erfp.m @ 4:e44f49929e56

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Adding reorganised general toolbox, now in several subdirectories.
author samer
date Sat, 12 Jan 2013 19:21:22 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/general/numerical/erfp.m	Sat Jan 12 19:21:22 2013 +0000
@@ -0,0 +1,9 @@
+function y=erfp(x)
+% erfp - returns Pr(X>x) for a normalised Gaussian random variable
+%
+% erfp :: X:real -> Z:real.
+%
+% Y = integeral from X to infinity of 
+% (1/sqrt(2*pi)) * exp(-0.5*t.^2)
+
+y = erfc(x/sqrt(2))/2;