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SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
brief: |
Outputs the characters defined by the format string and the arguments to the
kernel character output device.
copyrights:
- Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
- Copyright (C) 2015 On-Line Applications Research Corporation (OAR)
definition:
default:
attributes: ${../../basedefs/if/printflike:/name}( 1, 2 )
body: null
params:
- const char *${.:/params[0]/name}
- '...'
return: int
variants: []
description: null
enabled-by: true
index-entries: []
interface-type: function
links:
- role: interface-placement
uid: header-3
- role: interface-ingroup
uid: group-3
- role: constraint
uid: /constraint/directive-not-pre-qualified
- role: constraint
uid: /constraint/directive-ctx-any
- role: constraint
uid: /constraint/directive-no-preempt
- role: constraint
uid: ../constraint/no-floating-point
name: printk
notes: |
The directive may be used to print debug and test information. It uses
${putc:/name} to output the characters. This directive performs a character
translation from ``NL`` to ``CR`` followed by ``NR``.
If the kernel character output device is concurrently accessed, then
interleaved output may occur.
params:
- description: |
is a printf()-style format string.
dir: null
name: fmt
- description: |
is a list of optional parameters required by the format string.
dir: null
name: '...'
return:
return: |
Returns the number of characters output to the kernel character output
device.
return-values: []
type: interface
|
