REAL FUNCTION FNORML ( YPX )

Argument Definitions (+ indicates altered content)
REAL               YPX
Description
THIS FUNCTION COMPUTES THE CUMULATIVE NORMAL DISTRIBUTION FUNCTION 
FOR POSITIVE OR NEGATIVE VALUES OF X. SEE "THE HANDBOOK OF 
MATHEMATICAL FUNCTIONS", AMS 55.  NOTE THAT THIS METHOD WILL WORK 
ON 16 BIT MACHINES (32 BIT FLOATING POINT WORD)
Source file:fnorml.f
Intrinsic Functions Called
REAL               AMIN1
Local Variables (+ indicates altered content)
REAL              +C(4),      +PX,        +QX,        +YP