dear list readers,
with GNU Radio Companion v3.6.3-35-g4435082f compiled via build-gnuradio
using transcendental grc-block gives the following error
---------------8<------------
.....
ValueError: itemsize mismatch: throttle(14):0 using 8,
transcendental(13):0 using 16
---------------8<------------
This showed to me, that the transcendental block uses an unexpexted data
type
In the explanations for the block I found:
---------------8<------------
Possible function names can be found in the cmath library. IO may be
either complex or real, double or single precision.
Possible type strings: float, double, complex_float, complex_double
---------------8<------------
I enclosed a diff, applied the the origirnal, works for me
---------------8<------------
17,21d16
< <name>Complex_double</name>
< <key>complex_double</key>
< <opt>type:complex</opt>
< </option>
< <option>
23c18
< <key>complex_float</key>
---
> <key>complex_double</key>
25,29d19
< </option>
< <option>
< <name>Float_double</name>
< <key>float_double</key>
< <opt>type:float</opt>
---------------8<------------
may be I am wrong; or newer versions have corrected the error or no one
else has tested this function unter GRC...
to clarify that: I enclosed the new gr_transcendental.xml
hopefully this applies to those who did not explore the work around by
themself
Michael Hartje
--
Prof. Dr.-Ing. Michael Hartje
Labor Hochspannungstechnik / Labor elektrische Messtechnik
Neustadtswall 30; D-28199 Bremen
Tel +49 421 5905-3444 FAX +49 421 5905-3476
<?xml version="1.0"?>
<!--
###################################################
##transcendental functions
###################################################
-->
<block>
<name>Transcendental</name>
<key>gr_transcendental</key>
<import>from gnuradio import gr</import>
<make>gr.transcendental($name, "$type")</make>
<param>
<name>Type</name>
<key>type</key>
<type>enum</type>
<option>
<name>Complex_double</name>
<key>complex_double</key>
<opt>type:complex</opt>
</option>
<option>
<name>Complex</name>
<key>complex_float</key>
<opt>type:complex</opt>
</option>
<option>
<name>Float_double</name>
<key>float_double</key>
<opt>type:float</opt>
</option>
<option>
<name>Float</name>
<key>float</key>
<opt>type:float</opt>
</option>
</param>
<param>
<name>Function Name</name>
<key>name</key>
<value>cos</value>
<type>string</type>
</param>
<sink>
<name>in</name>
<type>$type.type</type>
</sink>
<source>
<name>out</name>
<type>$type.type</type>
</source>
</block>
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