asind.3m (2010 09)

a
asind(3M) asind(3M)
NAME
asind( ), asindf( ), asindl( ), asindw( ), asindq( ) - degree-valued arcsine functions
SYNOPSIS
#include <math.h>
double asind(double x);
float asindf(float x);
HP Integrity Server Only
long double asindl(long double x);
extended asindw(extended x);
quad asindq(quad x);
DESCRIPTION
asind() returns the degree-valued arcsine of x, in the range −90 to 90.
asindf() is a float version of asind(); it takes a
float argument and returns a float result.
Integrity Server Only
asindl() is a long double version of asind(); it takes a long double argument and returns a
long double result.
asindw() is an extended version of asind(); it takes an extended argument and returns an
extended result.
asindq() is equivalent to asindl() on HP-UX systems.
USAGE
To use these functions, compile either with the default
-Ae option or with the -Aa
and
-D_HPUX_SOURCE options.
To use (for Integrity servers)
asindw() or asindq(), compile also with the -fpwidetypes option.
To use any of these functions, make sure your program includes
<math.h>, and link in the math library
by specifying -lm on the compiler or linker command line.
For more information, see the HP-UX floating-point guide for HP Integrity servers at the following site:
http://www.hp.com/go/fp
.
RETURN VALUE
asind(±0) returns ±0.
If the magnitude of x is greater than one,
asind() returns NaN and raises the invalid exception.
If x is NaN,
asind() returns NaN.
ERRORS
If the magnitude of x is greater than one,
asind() sets errno to [EDOM].
Integrity Server
HP-UX
libm functions on Integrity server do not set errno by default. For errno setting, compile with
the +Olibmerrno option.
SEE ALSO
acosd(3M), asin(3M), atand(3M), atan2d(3M), cosd(3M), sind(3M), tand(3M), atan2d(3M), math(5).
STANDARDS CONFORMANCE
These functions are not specified by any standard.
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1