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asin (3)
  • asin (3) ( Solaris man: Библиотечные вызовы )
  • asin (3) ( FreeBSD man: Библиотечные вызовы )
  • asin (3) ( Русские man: Библиотечные вызовы )
  • >> asin (3) ( Linux man: Библиотечные вызовы )
  • asin (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    asin, asinf, asinl - arc sine function
     
    

    SYNOPSIS

    #include <math.h>
    
    double asin(double x);
    
    float asinf(float x);
    long double asinl(long double x);

    Link with -lm.

    Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

    asinf(), asinl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99  

    DESCRIPTION

    The asin() function calculates the principal value of the arc sine of x; that is the value whose sine is x.  

    RETURN VALUE

    On success, these functions return the principal value of the arc sine of x in radians; the return value is in the range [-pi/2, pi/2].

    If x is a NaN, a NaN is returned.

    If x is +0 (-0), +0 (-0) is returned.

    If x is outside the range [-1, 1], a domain error occurs, and a NaN is returned.  

    ERRORS

    See math_error(7) for information on how to determine whether an error has occurred when calling these functions.

    The following errors can occur:

    Domain error: x is outside the range [-1, 1]
    errno is set to EDOM. An invalid floating-point exception (FE_INVALID) is raised.
     

    CONFORMING TO

    C99, POSIX.1-2001. The variant returning double also conforms to SVr4, 4.3BSD, C89.  

    SEE ALSO

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

    COLOPHON

    This page is part of release 3.14 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/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    CONFORMING TO
    SEE ALSO
    COLOPHON


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