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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. |