---
name: "PGAGetIntegerFromGrayCode"
section: "1"
platform: "linux"
package: "pgapack"
version: "1.1.1-3"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/PGAGetIntegerFromGrayCode"
---

# PGAGetIntegerFromGrayCode(1)

interpets a binary reflected Gray code sequence as encoding an integer value and returns the integer value it represents.

## NAME

PGAGetIntegerFromGrayCode - interpets a binary reflected Gray code sequence as encoding an integer value and returns the integer 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

## OUTPUT PARAMETERS

- none

  ## SYNOPSIS

```
#include "pgapack.h"
int  PGAGetIntegerFromGrayCode(ctx, p, pop, start, end)
PGAContext *ctx
int p
int pop
int start
int end
```

## LOCATION

evaluate.c

## EXAMPLE

```
Example:
Get an integer j from bits 10--29 of string p in population PGA_NEWPOP.
The string is encoded in Gray code.
PGAContext *ctx;
int j, p;
:
j = PGAGetIntegerFromGrayCode(ctx, p, PGA_NEWPOP, 10, 29);
```