View Source: pow(3) - Waikato Linux Users Group

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EXP
!!!EXP
NAME
SYNOPSIS
DESCRIPTION
ERRORS
CONFORMING TO
SEE ALSO
----
!!NAME


exp, log, log10, pow - exponential, logarithmic and power functions
!!SYNOPSIS


__#include
__ ''x''__);
double log(double__ ''x''__);
double log10(double__ ''x''__);
double pow(double__ ''x''__, double__ ''y''__);
__
!!DESCRIPTION


The __exp()__ function returns the value of e (the base
of natural logarithms) raised to the power of
''x''.


The __log()__ function returns the natural logarithm of
''x''.


The __log10()__ function returns the base-10 logarithm of
''x''.


The __pow()__ function returns the value of ''x''
raised to the power of ''y''.
!!ERRORS


The __log()__ and __log10()__ functions can return the
following errors:


__EDOM__


The argument ''x'' is negative.


__ERANGE__


The argument ''x'' is zero. The log of zero is not
defined.


The __pow()__ function can return the following
error:


__EDOM__


The argument ''x'' is negative and ''y'' is not an
integral value. This would result in a complex
number.
!!CONFORMING TO


SVID 3, POSIX, BSD 4.3, ISO 9899
!!SEE ALSO


sqrt(3), cbrt(3)
----

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Last edited on Tuesday, June 4, 2002 12:24:30 am by "perry"

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