PGAGetRealFromGrayCode(1)

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);