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 interpolates 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 2.15.0                                 04 July 2025                     FcWeightFromOpenTypeDouble(3)