Table 6 Functions defined in <math.h>

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