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Search Linux manpages For:  

asin(3) -- Linux man page

 

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);
 

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

SVID 3, POSIX, BSD 4.3, ISO 9899. The float and long double variants are C99 requirements.  

SEE ALSO

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


 
 
 
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