[Cfp-interest] AI: in C, not in 754

[Jim Thomas]

>                 General: Need to look through our docs to see what is in C but not in IEEE 754.
> 

TS 18661-2 for C has these two functions that don’t corresponding to a 754 operation:


_DecimalN quantumdN(_DecimalN x); 
Description

[2] The quantumdN functions compute the quantum (5.2.4.2.2a) of a finite argument. If x is infinite, the result is +∞. If x is NaN, the result is NaN.

Returns

[3] The quantumdN functions return the quantum of x.



long long int llquantexpdN(_Decimal64 x); 

Description

[2] The llquantexpdN functions compute the quantum exponent (5.2.4.2.2a) of a finite argument. If x is infinite or NaN, they compute LLONG_MIN and a domain error occurs.

Returns

[3] The llquantexpdN functions return the quantum exponent of x.



Jim
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