ph.toUnit - added 3rd param

inc_pluginfunctions

@@ -37,6 +37,7 @@
 # 2023-05-05  v1.9  <axel.hahn@unibe.ch>      user specific counter directory
 # 2023-05-17  v1.10 <axel.hahn@unibe.ch>      ph.getOS searches in os-release first
 # 2023-06-22  v1.11 <axel.hahn@unibe.ch>      fix ph.toUnit with float values; shell fixes
+# 2023-08-24  v1.12 <axel.hahn@unibe.ch>      toUnit got 3rd param for count of digits after "."
 # ======================================================================
 
 
@@ -293,15 +294,24 @@ function ph._getExp(){
 #
 # param  string  value with optional single letter for unit, i.e. 12M
 # param  char    target unit
+# param  integer count of digits after "."; default: none (=integer value)
 function ph.toUnit(){
     local _value=$1
     local _unit=$2
+    local _digits=${3:-0}
 
     local _multiply; _multiply=$( ph._getExp "$_value" )
     local _divisor;  _divisor=$(  ph._getExp "$_unit"  )
 
-    # echo "DEBUG ... $_divisor .. $_multiply"
-    echo "$(echo "$_value" | tr -d "[:alpha:]" )*${_multiply}/$_divisor" | bc
+    local _bc
+    _bc="bc"
+
+    local _dots
+
+    test $_digits -gt 0 && _dots=$( yes "." | head -$_digits | tr -d "\n" )
+    test $_digits -gt 0 && _bc+=" -l | grep -o '.*\\.${_dots}'"
+
+    echo "$(echo "$_value" | tr -d "[:alpha:]" )*${_multiply}/$_divisor" | eval "$_bc" | sed "s#^\.#0.#"
     
 }