| ASIN(3) | Library Functions Manual | ASIN(3) | 
asin, asinf,
  asinl —
#include <math.h>
double
  
  asin(double
    x);
float
  
  asinf(float
    x);
long double
  
  asinl(long
    double x);
asin(), asinf(), and
  asinl() functions compute the principal value of the
  arc sine of x in the range [-pi/2, +pi/2].
asin(x),
  asinf(x), and
  asinl(x) return NaN and set the
  global variable errno to EDOM.
asin() function conforms to ISO/IEC
  9899:1999 (“ISO C99”).
| January 29, 2013 | NetBSD 10.0 |