Math.h

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C++ Standard Library headers
C Standard Library headers
assert.h
ctype.h
errno.h
float.h
limits.h
locale.h
math.h
setjmp.h
signal.h
stdarg.h
stddef.h
stdio.h
string.h
stdlib.h
time.h

math.h is a header file in the standard library of C programming language designed for basic mathematical operations. Most of the functions involve the use of floating point numbers. C++ also implements these functions for compatibility reasons and declares them in the header cmath.

[edit] Pre-C99 member functions

Name	Description
acos	arccosine
asin	arcsine
atan	arctangent
atan2	two-parameter arctangent
atof	convert ASCII text to a floating-point number
ceil	smallest integer not less than parameter
cos	cosine
cosh	hyperbolic cosine
exp(double x)	exponential function, computes ex
fabs	absolute value
floor	largest integer not greater than parameter
fmod	floating point remainder
frexp	fraction and power of 2.
ldexp	scale exponent of floating-point value
log	natural logarithm
log10	base-10 logarithm
modf	obtain integral and fractional parts of floating-point number
pow(x,y)	compute a value taken to an exponent, xy
sin	sine
sinh	hyperbolic sine
sqrt	square root
tan	tangent
tanh	hyperbolic tangent

[edit] External links

• Dinkumware math.h reference, a reference of all math.h functions