ccos(3) Library Functions Manual ccos(3) NAME ccos, ccosf, ccosl - complex cosine function LIBRARY Math library (libm, -lm) SYNOPSIS #include double complex ccos(double complex z); float complex ccosf(float complex z); long double complex ccosl(long double complex z); 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 ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). +--------------------------------------------+---------------+---------+ |Interface | Attribute | Value | +--------------------------------------------+---------------+---------+ |ccos (), ccosf (), ccosl () | Thread safety | MT-Safe | +--------------------------------------------+---------------+---------+ STANDARDS C11, POSIX.1-2008. HISTORY glibc 2.1. C99, POSIX.1-2001. SEE ALSO cabs(3), cacos(3), csin(3), ctan(3), complex(7) Linux man-pages 6.9.1 2024-05-02 ccos(3)