Guardian Native C Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

logb(3) Guardian Native C Library Calls Reference Manual
RELATED INFORMATION
Functions: fp_class(3), ilogb(3), isnan(3).
STANDARDS CONFORMANCE
The XPG4 Version 2 specification leaves some features to the implementing vendor to define.
The following features are affected in the HP implementation:
• For IEEE floating-point data, this function does not set errno to [EDOM] if the value of
x is NaN.
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