strtobool
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## Name

strtobool — convert common user inputs into boolean values

## Synopsis

`int strtobool (` | const char * s,
| bool * res`)`;

## Arguments

`s`

  input string

`res`

  result

## Description

This routine returns 0 iff the first character is one of 'Yy1Nn0'. Otherwise it will return -EINVAL. Value pointed to by res is updated upon finding a match.

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