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12 lines
266 B
C
12 lines
266 B
C
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#include "libm.h"
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// FIXME: Hull et al. "Implementing the complex arcsine and arccosine functions using exception handling" 1997
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/* acos(z) = pi/2 - asin(z) */
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double complex cacos(double complex z)
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{
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z = casin(z);
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return cpack(M_PI_2 - creal(z), -cimag(z));
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}
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