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CLAMP_VAL(9) Driver Basics CLAMP_VAL(9)

NAME

clamp_val - return a value clamped to a given range using val's type

SYNOPSIS

clamp_val(val, min, max);

ARGUMENTS

val
current value
min
minimum allowable value
max
maximum allowable value

DESCRIPTION

This macro does no typechecking and uses temporary variables of whatever type the input argument 'val' is. This is useful when val is an unsigned type and min and max are literals that will otherwise be assigned a signed integer type.

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16