SINDEG 3CW "25 January 2008" "mathcw-1.00"

Table of contents


NAME

sindegf, sindeg, sindegl, sindegw, sindegq, sindegll, sindegdf, sindegd, sindegdl, sindegdll - sine function for argument in degrees

SYNOPSIS

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

#include <mathcw.h>

extern float sindegf (float x);

extern double sindeg (double x);

extern long double sindegl (long double x);

extern __float80 sindegw (__float80 x);

extern __float128 sindegq (__float128 x);

extern long_long_double sindegll (long_long_double x);

extern decimal_float sindegdf (decimal_float x);

extern decimal_double sindegd (decimal_double x);

extern decimal_long_double sindegdl (decimal_long_double x);

extern decimal_long_long_double sindegdll (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 sine of x, where the argument is measured in degrees.

The argument is reduced exactly to the range [-180,+180] using the fmod() family before scaling from degrees to radians, and the sine of that value is then computed. Special cases of arguments at multiples of 45 degrees are handled separately.


RETURN VALUES

If the argument is finite, its sine is returned. Otherwise, a NaN is returned.

ERRORS

If the argument is a NaN, errno is set to EDOM, and the argument is returned. If the argument is +Infinity or -Infinity, errno is set to EDOM, and a quiet NaN is returned.

SEE ALSO

acos(3CW), acosp(3CW), acospi(3CW), asin(3CW), asinp(3CW), asinpi(3CW), atan(3CW), atan2(3CW), atan2p(3CW), atan2pi(3CW), atanp(3CW), atanpi(3CW), cos(3CW), cosdeg(3CW), cosp(3CW), cospi(3CW), cotan(3CW), cotandeg(3CW), cotanp(3CW), cotanpi(3CW), fmod(3CW), sin(3CW), sincos(3CW), sincosp(3CW), sincospi(3CW), sinp(3CW), sinpi(3CW), tan(3CW), tandeg(3CW), tanp(3CW), tanpi(3CW).