<math.h>

The <math.h> include file declares all the floating-point math functions:

acos cos floor log sqrt
asin cosh fmod log10 tan
atan erf frexp modf tanh
atan2 erfc gamma pow  
Bessel exp hypot sin  
ceil fabs ldexp sinh  

The Bessel functions are a group of functions named _j0, _j1, _jn, _y0, _y1, and _yn.

<math.h>, for OS/2 and Windows, also includes definitions for the following IBM C and C++ Compilers extensions:

For OS/2 and Windows, the _atold function is also defined in <stdlib.h> .

<math.h> defines the macros HUGE, _LHUGE, HUGE_VAL, and _LHUGE_VAL, which expand to a positive double expression or to infinity.

You can define a macro _FP_INLINE, on OS/2 and Windows, to inline the functions sin, cos, tan, atan, acos, asin and sqrt. If you use _FP_INLINE to inline the functions, you cannot use the functions defined in <complex.h>, or an error message is generated.

Note: You cannot take advantage of error handling when _FP_INLINE is defined.

For all mathematical functions, a domain error occurs when an input argument is outside the range of values allowed for that function. In the event of a domain error, errno is set to the value of EDOM.

A range error occurs if the result of the function cannot be represented in a double value. If the magnitude of the result is too large (overflow), the function returns the positive or negative value of the macro HUGE_VAL, and sets errno to ERANGE. If the result is too small (underflow), the function returns zero.



<stdlib.h>
#include