EXP
Section: Mathematical Library (3M)
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NAME
exp, log, log10, pow, sqrt - exponential, logarithm, power, square root
SYNOPSIS
#include <math.h>
double exp(x)
double x;
double log(x)
double x;
double log10(x)
double x;
double pow(x, y)
double x, y;
double sqrt(x)
double x;
DESCRIPTION
Exp
returns the exponential function of
x.
Log
returns the natural logarithm of
x;
log10
returns the base 10 logarithm.
Pow
returns
xy.
Sqrt
returns the square root of
x.
SEE ALSO
hypot(3),
sinh(3),
intro(2)
DIAGNOSTICS
Exp
and
pow
return a huge value when the correct value would
overflow;
errno
is set to ERANGE.
Pow
returns 0 and sets
errno
to
EDOM when the second argument is negative and non-integral and
when
both arguments are 0.
Log
returns 0 when
x
is zero or negative;
errno
is set to EDOM.
Sqrt
returns 0 when
x
is negative;
errno
is set to EDOM.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
- DIAGNOSTICS
-
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