CLOG1P 3CW "27 September 2009" "mathcw-1.00"

Table of contents


NAME

clog1pf, clog1p, clog1pl, clog1pw, clog1pq, clog1pll, clog1pdf, clog1pd, clog1pdl, clog1pdll - complex natural (base-e) logarithm function of 1 plus argument

SYNOPSIS

cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ]

#include <mathcw.h>

#include <complexcw.h>

extern float complex clog1pf (float complex z);

extern double complex clog1p (double complex z);

extern long double complex clog1pl (long double complex z);

extern __float80 complex clog1pw (__float80 complex z);

extern __float128 complex clog1pq (__float128 complex z);

extern long_long_double complex clog1pll (long_long_double complex z);

extern decimal_float complex clog1pdf (decimal_float complex z);

extern decimal_double complex clog1pd (decimal_double complex z);

extern decimal_long_double complex clog1pdl (decimal_long_double complex z);

extern decimal_long_long_double complex clog1pdll (decimal_long_long_double complex z);

NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.


DESCRIPTION

Compute the complex natural logarithm of the complex value z plus one, that is, the logarithm to the base e (= 2.718281828...) of 1 + z.

When compiler support for complex types is lacking, consider using the cx family of functions instead.


BRANCH CUTS

To be written.

RETURN VALUES

Return the complex natural logarithm.

ERRORS

For finite complex arguments, the returned value is complex and finite. For infinite arguments, at least one component of the returned value is Infinity. Otherwise, for NaN arguments, at least one component of the returned value is a quiet NaN.

SEE ALSO

atan2(3CW), cabs(3CW), carg(3CW), cexp(3CW), cexpm1(3CW), clog(3CW), hypot(3CW), log(3CW), log1p(3CW).