Man Asin en anglais
ASIN(3)                    Linux Programmer's Manual                   ASIN(3)



 

NAME


       asin, asinf, asinl - arc sine function

 

SYNOPSIS


       #include 

       double asin(double x);
       float asinf(float x);
       long double asinl(long double x);

       Link with -lm.

 

DESCRIPTION






       The  asin()  function  calculates  the arc sine of x; that is the value
       whose sine is x.  If x falls outside the range -1 to  1,  asin()  fails
       and errno is set.

 

RETURN VALUE


       The  asin()  function  returns the arc sine in radians and the value is
       mathematically defined to be between -PI/2 and PI/2 (inclusive).

 

ERRORS


       EDOM   x is out of range.

 

CONFORMING TO


       SVr4, POSIX.1-2001, 4.3BSD, C89, C99.  The float and long double  vari-
       ants are C99 requirements.

 

SEE ALSO


       acos(3), atan(3), atan2(3), casin(3), cos(3), sin(3), tan(3)

 

COLOPHON


       This  page  is  part of release 3.05 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.



                                  2002-07-25                           ASIN(3)