clamp_t(9) [suse man page]
CLAMP_T(9) Driver Basics CLAMP_T(9) NAME
clamp_t - return a value clamped to a given range using a given type SYNOPSIS
clamp_t(type, val, min, max); ARGUMENTS
type the type of variable to use val current value min minimum allowable value max maximum allowable value DESCRIPTION
This macro does no typechecking and uses temporary variables of type 'type' to make all the comparisons. COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 CLAMP_T(9)
Check Out this Related Man Page
pfsclamp(1) General Commands Manual pfsclamp(1) NAME
pfsclamp - Clamp color and luminance channel values to be within the specified range SYNOPSIS
pfsclamp [--min <minimum>] [--max <maximum>] [--percentile] [--zero] [--rgb] DESCRIPTION
Use this command to clamp values of luminance and color channels to be within the specified range. I.e. if a value in the channel is above the specified maximum or below specified minimum, set the value to either minimum or maximum. The command operates directly on XYZ channels. OPTIONS
--min <val> Lower bound for clamping. Default value: 0.0001 (10^-4) --max <val> Upper bound for clamping. Default value: 100000000 (10^8) --percentile, -p Treat given min and max values as a percentile. --zero, -z Set values out of clamping range to zero, instead of setting to specified maximum and minimum. --rgb Perform clamping in RGB space. EXAMPLES
pfsin memorial.hdr | pfsclamp | pfsout memorial_cl.hdr Remove possible out-of-range values, for examples zeros, from memorial image. pfsin memorial.hdr | pfsclamp --max 0.95 -p | pfsout memorial_cl.hdr Remove 5% of the brightest pixels from the original image. SEE ALSO
pfsin(1) pfsout(1) BUGS
Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-sb.mpg.de> and Grzegorz Krawczyk <krawczyk@mpi-sb.mpg.de>. pfsclamp(1)