NAME
PGAGetRealFromGrayCode - interpets a binary reflected Gray code
sequence in a binary string as encoding a real value and returns the
real value it represents.
INPUT PARAMETERS
ctx - context variable
p - string index
pop - symbolic constant of the population the string is in
start - starting bit position in the binary representation
end - ending bit position in the binary representation
lower - lower bound of the interval the real number is defined on
upper - lower bound of the interval the real number is defined on
OUTPUT PARAMETERS
none
SYNOPSIS
#include "pgapack.h"
double PGAGetRealFromGrayCode(ctx, p, pop, start, end, lower, upper)
PGAContext *ctx
int p
int pop
int start
int end
double lower
double upper
LOCATION
evaluate.c
EXAMPLE
Example:
Decode a real value from the string p in population PGA_NEWPOP. The
value to decode lies on the interval [-10,20] and is represented
using the 20 bits in bit positions 10--29.
double x;
:
x = PGAGetRealFromGrayCode(ctx, p, PGA_NEWPOP, 10, 29, -10.0, 20.0);
05/01/95 PGAGetRealFromGrayCode(1)