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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, lo, hi);

ARGUMENTS

val
current value
lo
minimum allowable value
hi
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

January 2017 Kernel Hackers Manual 4.8.