histobins − histogram bins utility for scripts/hal-histogram
Usage:
Read availablebins pin for the number of bins available.
Set the minvalue, binsize, and nbins pins.
Ensure nbins <= availablebins
For nbins = N, the bins are numbered: 0 ... N-1
Iterate:
Set index pin to a bin number: 0 <= index < nbins.
Read check pin and verify that check pin == index pin.
Read outputs: binvalue, pextra, nextra pins.
(binvalue is count for the indexed bin)
(pextra is count for all inputs > maxvalue)
(nextra is count for all bins < minvalue)
If index is out
of range (index < 0 or index > maxbinnumber)
then binvalue == -1.
The input-error pin is set when input rules are violated
and updates cease.
The reset pin may be used to restart.
The input used is selected based on pintype:
pintype inputpin
------- -----------
0 input
1 input-s32
2 input-u32
3 input-bit
Additional output statistics pins:
input-min
input-max
nsamples
variance
mean
The method input pin selects an alternate variance
calculation.
Maintainers note: hardcoded for MAXBINNUMBER==200
histobins.N (requires a floating-point thread)
histobins.N.pintype
u32 in
histobins.N.input float in
histobins.N.input-s32 s32 in
histobins.N.input-u32 u32 in
histobins.N.input-bit bit in
histobins.N.nbins u32 in (default:
20)
histobins.N.binsize float in (default:
1)
histobins.N.minvalue float in (default:
0)
histobins.N.index s32 in
histobins.N.check s32 out
histobins.N.reset bit in
histobins.N.method bit in
histobins.N.input-error bit out
histobins.N.binvalue float out
histobins.N.pextra float out
histobins.N.nextra float out
histobins.N.input-min float out
histobins.N.input-max float out
histobins.N.nsamples u32 out
histobins.N.variance float out
histobins.N.mean float out
histobins.N.availablebins s32 out
(default: 200)
GPL