Some math.h function prototypes

• double acos(double x) -- arc cosine
• double asin(double x) -- arc sine
• double atan(double x) -- arc tangent
• double atan2(double y, double x) -- arc tangent of y/x
• double cos(double x) -- cosine
• double sin(double x) -- sine
• double tan(double x) -- tangent
• double cosh(double x) -- hyperbolic cosine
• double sinh(double x) -- hyperbolic sine
• double tanh(double x) -- hyperbolic tangent
• double exp(double x) -- exponential
• double log(double x) -- natural logarithm
• double log10(double x) -- base 10 logarithm
• double pow(double x, double y) -- x raised to the power y
• double sqrt(double x) -- square root
• double ceil(double x) -- smallest integer not less than x
• double fabs(double x) -- absolute value of a floating point
• double floor(double x) -- largest integer not greater than x
• double fmod(double x, double y) -- floating point remainder of x/y