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754f66afb76f59bb4c43f303fb9406a3841a448f
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complex
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ccos.c
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#include
"libm.h"
/* cos(z) = cosh(i z) */
double
complex ccos
(
double
complex z
)
{
return
ccosh
(
CMPLX
(-
cimag
(
z
),
creal
(
z
)));
}