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

# PGAMutate(3)

This routine performs mutation on a string.

## NAME

PGAMutate - This routine performs mutation on a string.

## DESCRIPTION

The type of mutation depends on the data type.  Refer to the user guide for data-specific examples.

## INPUT PARAMETERS

- ctx

  \- context variable

- p

  \- index of string to mutate

- pop

  \- symbolic constant of the population containing p

## OUTPUT PARAMETERS

- none

  ## SYNOPSIS

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

## LOCATION

mutation.c

## EXAMPLE

```
Example:
Mutate the best string in the population, until 10 or more mutations
have occured.
PGAContext *ctx;
int p, count = 0;
:
p = PGAGetBestIndex(ctx, PGA_NEWPOP);
while (count < 10) {
count += PGAMutate(ctx, p, PGA_NEWPOP);
}
```