Functions:

abs	Return absolute value of integer parameter
acos	Calculate arccosine
asin	Calculate arcsine
atan	Calculate arctangent
atan2	Calculate arctangent, 2 parameters
atof	Convert string to double
ceil	Return the smallest integer that is greater or equal to x
cos	Calculate cosine
cosh	Calculate hyperbolic cosine
exp	Calculate exponential
fabs	Return absolute value of floating-point
floor	Round down value
fmod	Return remainder of floating point division
frexp	Get mantissa and exponent of floating-point value
labs	Return absolute value of long integer parameter
ldexp	Get floating-point value from mantissa and exponent
log	Calculate natural logarithm
log10	Calculate logarithm base 10
modf	Spli floating-point value into fractional and integer parts
pow	Calculate numeric power
sin	Calculate sine
sinh	Calculate hyperbolic sine
sqrt	Calculate square root
tan	Calculate tangent
tanh	Calculate hyperbolic tangent