ACOSDEG 3CW "09 March 2006" "mathcw-1.00"

Table of contents


NAME

acosdegf, acosdeg, acosdegl, acosdegw, acosdegq, acosdegll, acosdegdf, acosdegd, acosdegdl, acosdegdll - arc cosine function in degrees

SYNOPSIS

cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ]

#include <mathcw.h>

extern float acosdegf (float x);

extern double acosdeg (double x);

extern long double acosdegl (long double x);

extern __float80 acosdegw (__float80 x);

extern __float128 acosdegq (__float128 x);

extern long_long_double acosdegll (long_long_double x);

extern decimal_float acosdegdf (decimal_float x);

extern decimal_double acosdegd (decimal_double x);

extern decimal_long_double acosdegdl (decimal_long_double x);

extern decimal_long_long_double acosdegdll (decimal_long_long_double x);

NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.


DESCRIPTION

Compute the principal value of the arc cosine function in degrees. The value of x should be in the range [-1,+1].

RETURN VALUES

For in-range arguments, the returned value is in the range [+0,+360]. Otherwise, the returned value is a quiet NaN.

ERRORS

For out-of-range, Infinity and NaN arguments, the returned value is a quiet NaN, and errno is set to EDOM.

SEE ALSO

asindeg(3CW), atan2deg(3CW), atandeg(3CW), cosdeg(3CW), cotandeg(3CW), sindeg(3CW), tandeg(3CW).