man:ccosl
CCOS(3) Linux Programmer's Manual CCOS(3)
NAME
ccos, ccosf, ccosl - complex cosine function
SYNOPSIS
#include <complex.h>
double complex ccos(double complex z); float complex ccosf(float complex z); long double complex ccosl(long double complex z);
Link with -lm.
DESCRIPTION
These functions calculate the complex cosine of z.
The complex cosine function is defined as:
ccos(z) = (exp(i * z) + exp(-i * z)) / 2
VERSIONS
These functions first appeared in glibc in version 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
allbox; lbw24 lb lb l l l. Interface Attribute Value T{ ccos(), ccosf(), ccosl() T} Thread safety MT-Safe
CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.
SEE ALSO
cabs(3), cacos(3), csin(3), ctan(3), complex(7)
COLOPHON
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2017-09-15 CCOS(3)
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