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EXP
Section: Linux Programmer's Manual (3)Updated: 1993-06-16
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NAME
exp, log, log10, pow - exponential, logarithmic and power functionsSYNOPSIS
#include <math.h> double exp(double 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 9899SEE ALSO
sqrt(3), cbrt(3)