acos arc-osine
asin arc-sine
atan arc-tangent (principal value)
atan2 arc-tangent (full circle)
ceil ceiling
cos cosine
cosh hyperbolic cosine
exp power of e
fabs absolute value
floor floor (greatest-integer-in
function)
fmod modulus (remainder)
frexp normalized fraction/
exponent parts
ldexp inverse of frexp
log natural logarithm
log10 logarithm base 10
modf integer/fractional parts
pow raise a number to a power
sin sine
sinh hyperbolic sine
sqrt square root
tan tangent
tanh hyperbolic tangent