SYNOPSIS<\/a>
DESCRIPTION<\/a>
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COLOPHON<\/a> <\/p>\n
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NAME <\/a> <\/h2>\nclog, clogf, clogl \u2212 natural logarithm of a complex number<\/p>\n
SYNOPSIS <\/a> <\/h2>\n#include <\/b><\/p>\ndouble complex clog(double complex<\/b> z<\/i>);
float complex clogf(float complex<\/b> z<\/i>);
long double complex clogl(long double complex<\/b> z<\/i>);<\/b><\/p>\n
Link with \u2212lm<\/i>.<\/p>\nDESCRIPTION <\/a> <\/h2>\nThese functions calculate the complex natural logarithm of z<\/i>, with a branch cut along the negative real axis.<\/p>\n
The logarithm clog<\/b>() is the inverse function of the exponential cexp<\/b>(3). Thus, if y\u00a0=\u00a0clog(z)<\/i>, then z\u00a0=\u00a0cexp(y)<\/i>. The imaginary part of y<\/i> is chosen in the interval [\u2212pi,pi].<\/p>\n
One has:<\/p>\n
clog(z) = log(cabs(z)) + I bodies manpages.csv script_extrae_body.sh script.sh usr carg(z)<\/p>\n
Note that z<\/i> close to zero will cause an overflow.<\/p>\nVERSIONS <\/a> <\/h2>\nThese functions first appeared in glibc in version 2.1.<\/p>\n
ATTRIBUTES <\/a> <\/h2>\nFor an explanation of the terms used in this section, see attributes<\/b>(7).<\/p>\n\n\n<\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n<\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n<\/tr>\n<\/table>\n![\"Image](\"grohtml-1596141.png\")
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CONFORMING TO <\/a> <\/h2>\nC99, POSIX.1-2001, POSIX.1-2008.<\/p>\n
SEE ALSO <\/a> <\/h2>\n
#include double complex clog(double complex<\/b> z<\/i>); Link with \u2212lm<\/i>.<\/p>\n These functions calculate the complex natural logarithm of z<\/i>, with a branch cut along the negative real axis.<\/p>\n The logarithm clog<\/b>() is the inverse function of the exponential cexp<\/b>(3). Thus, if y\u00a0=\u00a0clog(z)<\/i>, then z\u00a0=\u00a0cexp(y)<\/i>. The imaginary part of y<\/i> is chosen in the interval [\u2212pi,pi].<\/p>\n One has:<\/p>\n clog(z) = log(cabs(z)) + I bodies manpages.csv script_extrae_body.sh script.sh usr carg(z)<\/p>\n Note that z<\/i> close to zero will cause an overflow.<\/p>\n These functions first appeared in glibc in version 2.1.<\/p>\n For an explanation of the terms used in this section, see attributes<\/b>(7).<\/p>\n C99, POSIX.1-2001, POSIX.1-2008.<\/p>\n
float complex clogf(float complex<\/b> z<\/i>);
long double complex clogl(long double complex<\/b> z<\/i>);<\/b><\/p>\nDESCRIPTION <\/a> <\/h2>\n
VERSIONS <\/a> <\/h2>\n
ATTRIBUTES <\/a> <\/h2>\n
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\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n <\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/td>\n<\/tr>\n<\/table>\n <\/p>\nCONFORMING TO <\/a> <\/h2>\n
SEE ALSO <\/a> <\/h2>\n