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FcWeightFromOpenTypeDouble(3)                    FcWeightFromOpenTypeDouble(3)

NAME
       FcWeightFromOpenTypeDouble  -  Convert  from  OpenType weight values to
       fontconfig ones

SYNOPSIS
       #include <fontconfig/fontconfig.h>

       double FcWeightFromOpenTypeDouble (doubleot_weight);

DESCRIPTION
       FcWeightFromOpenTypeDouble  returns  an  double  value  to   use   with
       FC_WEIGHT,  from an double in the 1..1000 range, resembling the numbers
       from OpenType specification's OS/2 usWeight  numbers,  which  are  also
       similar  to  CSS  font-weight  numbers.  If input is negative, zero, or
       greater than 1000, returns -1.  This function linearly  doubleerpolates
       between  various  FC_WEIGHT_*  constants.   As such, the returned value
       does not necessarily match any of the predefined constants.

SINCE
       version 2.12.92

Fontconfig 2.13.1                23 March 2022   FcWeightFromOpenTypeDouble(3)

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