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       pmUnitsStr - convert a performance metric’s units into a string


       #include <pcp/pmapi.h>

       const char *pmUnitsStr(const pmUnits *pu)

       cc ... -lpcp


       The  encoding of a performance metric’s dimensionality and scale uses a
       pmUnits structure; see pmLookupDesc(3).

       As an aid to  labeling  graphs  and  tables,  or  for  error  messages,
       pmUnitsStr will take a dimension and scale specification as per pu, and
       return the corresponding text string.

       For example {1, -2, 0, PM_SPACE_MBYTE, PM_TIME_SEC, 0}, as the value of
       *pu gives the result string Mbyte / sec^2.

       The  string  value  is  held in a single static buffer, so the returned
       value is only valid until the next call to pmUnitsStr.

       If the ‘‘count’’ dimension is non-zero, and the ‘‘count’’ scale is  not
       zero,  then  the text string will include a decimal scaling factor, eg.
       count x 10^6.

       As a special case, if all components of the dimension  are  zero,  then
       the ‘‘count’’ scale is used to produce the text.  If this scale is zero
       the result is an empty string, otherwise the result is of the  form  x1


       PMAPI(3),      pmAtomStr(3),     pmConvScale(3),     pmExtractValue(3),
       pmLookupDesc(3), pmPrintValue(3) and pmTypeStr(3).