Standard C Math

abs	absolute value
acos	arc cosine
asin	arc sine
atan	arc tangent
atan2	arc tangent, using signs to determine quadrants
ceil	the smallest integer not less than a certain value
cos	cosine
cosh	hyperbolic cosine
div	returns the quotient and remainder of a division
exp	returns “e” raised to a given power
fabs	absolute value for floating-point numbers
floor	returns the largest integer not greater than a given value
fmod	returns the remainder of a division
frexp	decomposes a number into scientific notation
labs	absolute value for long integers
ldexp	computes a number in scientific notation
ldiv	returns the quotient and remainder of a division, in long integer form
log	natural logarithm (to base e)
log10	common logarithm (to base 10)
modf	decomposes a number into integer and fractional parts
pow	returns a given number raised to another number
sin	sine
sinh	hyperbolic sine
sqrt	square root
tan	tangent
tanh	hyperbolic tangent