asin(3)
- NetBSD Manual Pages
ASIN(3) NetBSD Library Functions Manual ASIN(3)
NAME
asin, asinf, asinl -- arc sine function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
asin(double x);
float
asinf(float x);
long double
asinl(long double x);
DESCRIPTION
The asin(), asinf(), and asinl() functions compute the principal value of
the arc sine of x in the range [-pi/2, +pi/2].
RETURN VALUES
If |x|>1, asin(x), asinf(x), and asinl(x) return NaN and set the global
variable errno to EDOM.
SEE ALSO
acos(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sin(3), sinh(3),
tan(3), tanh(3)
STANDARDS
The asin() function conforms to ISO/IEC 9899:1999 (``ISO C99'').
NetBSD 10.99 January 29, 2013 NetBSD 10.99
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