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

# PGASetMutationRealValue(3)

Set multiplier to mutate PGA\_DATATYPE\_REAL strings with.

## NAME

PGASetMutationRealValue - Set multiplier to mutate PGA\_DATATYPE\_REAL strings with.

## DESCRIPTION

The use of this value depends on the type of mutation being used.  The default value is 0.1.  See the user guide for more details.

## INPUT PARAMETERS

- ctx

  \- context variable

- val

  \- the mutation value to use for Real mutation

## OUTPUT PARAMETERS

- none

  ## SYNOPSIS

```
#include "pgapack.h"
void  PGASetMutationRealValue(ctx, val)
PGAContext *ctx
double val
```

## LOCATION

mutation.c

## EXAMPLE

```
Example:
PGAContext *ctx;
:
PGASetMutationRealValue(ctx,50.0);
```