User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |

---

   casinl    ( 3 )

---

---

Имя (Name)

casin, casinf, casinl - complex arc sine

---

Синопсис (Synopsis)

#include <complex.h>

       double complex casin(double complex z);
       float complex casinf(float complex z);
       long double complex casinl(long double complex z);

       Link with -lm.

---

Описание (Description)

These functions calculate the complex arc sine of z.  If
       y = casin(z), then z = csin(y).  The real part of y is chosen in
       the interval [-pi/2,pi/2].

       One has:

           casin(z) = -i clog(iz + csqrt(1 - z * z))

---

Версии (Versions)

These functions first appeared in glibc in version 2.1.

---

Атрибуты (Attributes)

For an explanation of the terms used in this section, see
       attributes(7).

       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │casin(), casinf(), casinl()           │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

---

Стандарты (Conforming to)

C99, POSIX.1-2001, POSIX.1-2008.

---

Смотри также (See also)

clog(3), csin(3), complex(7)

---