float64_sub
return float64_sub(roundData, rFm, rFn);
[SUF_CODE >> 20] = float64_sub,
float64 float64_sub( struct roundingData *, float64, float64 );
llx = float64_sub(llx, lly);
extern unsigned long long float64_sub(unsigned long long a,
float64 float64_sub(float64 a, float64 b);