Open System Services Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

powf(3) OSS Library Calls Reference Manual
• If the value of x is positive or negative 0.0 (zero) and the value of y is an odd integral
value greater than 0.0 (zero), positive or negative 0.0 (zero) is returned.
• If the value of x is positive or negative 0.0 (zero) and the value of y is not an odd integral
value but is greater than 0.0 (zero), positive 0.0 (zero) is returned.
ERRORS
If any of the following conditions occurs, the powf( ) function sets errno to the corresponding
value:
[EDOM] One of the following conditions exists:
• The value of x is negative and the value of y is nonintegral.
• The value of x is 0.0 (zero) and the value of y is negative.
[ERANGE] The value to be returned would have caused an underflow or an overflow.
RELATED INFORMATION
Functions: exp(3), fp_class(3), isnan(3), log(3), log10(3), pow(3), powl(3), sinh(3).
STANDARDS CONFORMANCE
This function conforms to the ISO/IEC 9899:1999 standard.
This function conforms to the IEEE Std 1003.1, 2004 Edition.
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