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CSIN(3) Linux Programmer's Manual CSIN(3) NAME csin, csinf, csinl - complex sine function SYNOPSIS #include <complex.h> double complex csin(double complex z); float complex csinf(float complex z); long double complex csinl(long double complex z); Link with -lm. DESCRIPTION These functions calculate the complex sine of z. The complex sine function is defined as: csin(z) = (exp(i * z) - exp(-i * z)) / (2 * i) 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). ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ¬ββββββββββββββββ¬ββββββββββ βInterface β Attribute β Value β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββΌββββββββββββββββΌββββββββββ€ βcsin(), csinf(), csinl() β Thread safety β MT-Safe β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ΄ββββββββββββββββ΄ββββββββββ CONFORMING TO C99, POSIX.1-2001, POSIX.1-2008. SEE ALSO cabs(3), casin(3), ccos(3), ctan(3), complex(7) 2021-03-22 CSIN(3)