snd_pcm_format_unsigned(9) centos man page | unix.com

SND_PCM_FORMAT_UNSIG(9) 					      PCM API						   SND_PCM_FORMAT_UNSIG(9)

NAME
       snd_pcm_format_unsigned - Check the PCM format is unsigned linear

SYNOPSIS
       int snd_pcm_format_unsigned(snd_pcm_format_t format);

ARGUMENTS
       format
	   the format to check

RETURN
       1 if the given PCM format is unsigned linear, 0 if signed linear, and a negative error code for non-linear formats.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   SND_PCM_FORMAT_UNSIG(9)