1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 <2017> 2018 2019 2020 2021 2022 2023 2024 | Index | 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 <2017> 2018 2019 2020 2021 2022 2023 2024 |
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Subject: | Basic String Concatenation in EPICS |
From: | "Sobhani, Bayan" <[email protected]> |
To: | "[email protected]" <[email protected]> |
Date: | Fri, 6 Oct 2017 17:11:48 +0000 |
Is there a way to concatenate two strings in EPICS? Googling “concatenate strings epics” brings up sCalcout. I tried using sCalcout, but it insists on converting the inputs to floating point values and this causes some problems: record (stringin, "$(Sys)$(Dev)OLFQ") { field (DESC, "Open Loop Frequency") field (DTYP, "Soft Channel") field(SCAN, "Passive") } record (stringin, "$(Sys)$(Dev)MVOL") { field (DESC, "Open Loop Steps") field(SCAN, "Passive") } record (scalcout, "$(Sys)$(Dev)Result") { field (DESC, "Open Loop Steps") field(SCAN, "1 second") field(INPA, "$(Sys)$(Dev)MVOL") field(INPB, "$(Sys)$(Dev)OLFQ") field(CALC, "STR(A)+STR(B)") } If I set $(Sys)$(Dev)OLFQ to 1, and $(Sys)$(Dev)MVOL to 2, the result I get in SVAL is “1.00002.0000”. Is there any way to get just “12”? If I do it without the STR around A and B, it numerically adds A and B and I get “3.0000” for SVAl.
Is it not possible to just concatenate two string PVs in epics? Alex |