HP-UX Floating-Point Guide

196 Appendix A
The C Math Library
C Math Library Tables
Table A-1 The C Math Library (By Category)
Function What It Does
Trigonometric Functions for Radian-Value Arguments
double acos(double x); Returns arccosine of x in radians.
(Millicode version available)
double asin(double x); Returns arcsine of x in radians. (Millicode
version available)
double atan(double x); Returns arctangent of x in radians.
(Millicode version available)
double atan2(double y, double x); Returns arctangent of y/x in radians.
(Millicode version available)
double cos(double x); Returns cosine of x (x in radians).
(Millicode version available)
double sin(double x); Returns sine of x (x in radians). (Millicode
version available)
double tan(double x); Returns tangent of x (x in radians).
(Millicode version available)
Trigonometric Functions for Degree-Value Arguments
double acosd(double x); Returns arccosine of x in degrees.
double asind(double x); Returns arcsine of x in degrees.
double atand(double x); Returns arctangent of x in degrees.
double atan2d(double y, double x); Returns arctangent of y/x in degrees.
double cosd(double x); Returns cosine of x (x in degrees).
double sind(double x); Returns sine of x (x in degrees).
double tand(double x); Returns tangent of x (x in degrees).
Other Transcendental Functions
double acosh(double x); Returns inverse hyperbolic cosine of x.
double asinh(double x); Returns inverse hyperbolic sine of x.