ENH: add foamDictionary -precision option (issue #1177)

- since foamDictionary doesn't use system/controlDict it will use the
  standard default precision. The '-precision' option allows adjusting
  that value.

applications/test/limits/Test-limits.C

@@ -40,20 +40,33 @@ using namespace Foam;
 int main(int argc, char *argv[])
 {
     //NONE Info<<"int16:" << pTraits<int16_t>::max << nl;
+    Info<<"=max=" << nl;
+    Info<<"uint8:" << std::numeric_limits<uint8_t>::max() << nl;
     Info<<"int16:" << std::numeric_limits<int16_t>::max() << nl;
     Info<<"int32:" << pTraits<int32_t>::max << nl;
-    Info<<"int64:" << pTraits<int64_t>::max << nl;
     Info<<"uint32:" << pTraits<uint32_t>::max << nl;
+    Info<<"int64:" << pTraits<int64_t>::max << nl;
     Info<<"uint64:" << pTraits<uint64_t>::max << nl;
 
     Info<< nl;
 
     cout<<"int16:" << std::numeric_limits<int16_t>::max() << nl;
     cout<<"int32:" << pTraits<int32_t>::max << nl;
-    cout<<"int64:" << pTraits<int64_t>::max << nl;
     cout<<"uint32:" << pTraits<uint32_t>::max << nl;
+    cout<<"int64:" << pTraits<int64_t>::max << nl;
     cout<<"uint64:" << pTraits<uint64_t>::max << nl;
 
+    Info<< nl << "=digits=" << nl;
+
+    cout<<"int16:" << std::numeric_limits<int16_t>::digits << nl;
+    cout<<"int32:" << std::numeric_limits<int32_t>::digits << nl;
+    cout<<"uint32:" << std::numeric_limits<uint32_t>::digits << nl;
+    cout<<"int64:" << std::numeric_limits<int64_t>::digits << nl;
+    cout<<"uint64:" << std::numeric_limits<uint64_t>::digits << nl;
+    cout<<"float:"  << std::numeric_limits<float>::digits << nl;
+    cout<<"double:" << std::numeric_limits<double>::digits << nl;
+    cout<<"long double:" << std::numeric_limits<long double>::digits << nl;
+
     Info << "---\nEnd\n" << endl;
 
     return 0;

applications/utilities/miscellaneous/foamDictionary/foamDictionary.C

@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2016-2017 OpenFOAM Foundation
-     \\/     M anipulation  | Copyright (C) 2017-2018 OpenCFD Ltd.
+     \\/     M anipulation  | Copyright (C) 2017-2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -64,6 +64,9 @@ Usage
       - \par -disableFunctionEntries
         Do not expand macros or directives (\#include etc)
 
+      - \par -precision int
+        Set default write precision for IOstreams
+
     Example usage:
       - Change simulation to run for one timestep only:
         \verbatim
@@ -307,6 +310,12 @@ int main(int argc, char *argv[])
         "As per -diff, but locate the file as per foamEtcFile"
     );
     argList::addOptionCompat("diff-etc", {"diffEtc", 1712});
+    argList::addOption
+    (
+        "precision",
+        "int",
+        "Set default write precision for IOstreams"
+    );
 
     argList::addBoolOption
     (
@@ -346,6 +355,20 @@ int main(int argc, char *argv[])
         entry::disableFunctionEntries = true;
     }
 
+    // Set the default output precision
+    {
+        const unsigned prec = args.lookupOrDefault<unsigned>("precision", 0u);
+        if (prec)
+        {
+            // if (Pstream::master())
+            // {
+            //     Serr<< "Output write precision set to " << prec << endl;
+            // }
+
+            IOstream::defaultPrecision(prec);
+            Sout.precision(prec);
+        }
+    }
 
     const fileName dictFileName(args[1]);
 

applications/utilities/surface/surfaceConvert/surfaceConvert.C

@@ -89,20 +89,23 @@ int main(int argc, char *argv[])
     );
     argList::addOption
     (
-        "writePrecision",
+        "precision",
-        "label",
+        "int",
         "Write to output with the specified precision"
     );
+    argList::addOptionCompat("precision", {"writePrecision", 1812});
 
     argList args(argc, argv);
 
-    if (args.found("writePrecision"))
     {
-        const label prec = args.opt<label>("writePrecision");
+        const unsigned prec = args.lookupOrDefault<unsigned>("precision", 0u);
-        Info<< "Output write precision set to " << prec << endl;
+        if (prec)
+        {
+            Info<< "Output write precision set to " << prec << endl;
 
-        IOstream::defaultPrecision(prec);
+            IOstream::defaultPrecision(prec);
-        Sout.precision(prec);
+            Sout.precision(prec);
+        }
     }
 
     const fileName importName = args[1];

etc/config.sh/completion_cache

@@ -83,7 +83,7 @@ _of_complete_cache_[fluentMeshToFoam]="-2D -case -fileHandler -scale | -noFuncti
 _of_complete_cache_[FMSToSurface]="-case -fileHandler | -exportFeatureEdges -exportSubsets -noFunctionObjects -doc -doc-source -help"
 _of_complete_cache_[FMSToVTK]="-case -fileHandler | -noFunctionObjects -doc -doc-source -help"
 _of_complete_cache_[foamDataToFluent]="-case -fileHandler -time | -latestTime -noFunctionObjects -noZero -doc -doc-source -help"
-_of_complete_cache_[foamDictionary]="-add -case -decomposeParDict -diff -diff-etc -entry -fileHandler -set | -disableFunctionEntries -expand -includes -keywords -noFunctionObjects -parallel -remove -value -doc -doc-source -help"
+_of_complete_cache_[foamDictionary]="-add -case -decomposeParDict -diff -diff-etc -entry -fileHandler -precision -set | -disableFunctionEntries -expand -includes -keywords -noFunctionObjects -parallel -remove -value -doc -doc-source -help"
 _of_complete_cache_[foamFormatConvert]="-case -decomposeParDict -fileHandler -region -time | -constant -enableFunctionEntries -latestTime -noConstant -noFunctionObjects -noZero -parallel -doc -doc-source -help"
 _of_complete_cache_[foamHelp]="-case -decomposeParDict -fileHandler -region | -noFunctionObjects -parallel -doc -doc-source -help"
 _of_complete_cache_[foamListRegions]="-case -fileHandler | -doc -doc-source -help"
@@ -246,7 +246,7 @@ _of_complete_cache_[surfaceBooleanFeatures]="-case -fileHandler -scale -trim | -
 _of_complete_cache_[surfaceCheck]="-case -fileHandler -outputThreshold -writeSets | -blockMesh -checkSelfIntersection -noFunctionObjects -splitNonManifold -verbose -doc -doc-source -help"
 _of_complete_cache_[surfaceClean]="-case -fileHandler -scale | -noClean -noFunctionObjects -doc -doc-source -help"
 _of_complete_cache_[surfaceCoarsen]="-case -fileHandler -scale | -noFunctionObjects -doc -doc-source -help"
-_of_complete_cache_[surfaceConvert]="-case -fileHandler -scale -writePrecision | -clean -group -noFunctionObjects -doc -doc-source -help"
+_of_complete_cache_[surfaceConvert]="-case -fileHandler -precision -scale | -clean -group -noFunctionObjects -doc -doc-source -help"
 _of_complete_cache_[surfaceFeatureConvert]="-case -fileHandler -scale | -noFunctionObjects -doc -doc-source -help"
 _of_complete_cache_[surfaceFeatureEdges]="-angle -case -fileHandler | -noFunctionObjects -doc -doc-source -help"
 _of_complete_cache_[surfaceFeatureExtract]="-case -dict -fileHandler | -doc -doc-source -help"