isdouble
Determine if digital filter coefficients are double precision
Syntax
Description
Examples
Double- and Single-Precision Filter
Use designfilt
to design a sixth-order highpass IIR filter. Specify a normalized passband frequency of rad/sample. Convert it to a single-precision filter. Identify the precision in each case.
fd = designfilt('highpassiir','FilterOrder',6,'PassbandFrequency',0.6); isd = isdouble(fd)
isd = logical
1
fs = single(fd); iss = isdouble(fs)
iss = logical
0
Input Arguments
d
— Digital filter
digitalFilter
object
Digital filter, specified as a digitalFilter
object. Use designfilt
to generate d
.
If you want a single-precision filter, apply single
to
the output of designfilt
.
Example: d = designfilt('lowpassiir','FilterOrder',3,'HalfPowerFrequency',0.5)
specifies
a third-order Butterworth filter with normalized
3-dB frequency 0.5π rad/sample.
Output Arguments
flag
— Type identification
logical scalar
Type identification, returned as a logical scalar.
Version History
Introduced in R2014a
See Also
designfilt
| digitalFilter
| double
| issingle
| single
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