LI. Mathematical Functions

Table of Contents
abs -- Absolute value
acos -- Arc cosine
acosh -- Inverse hyperbolic cosine
asin -- Arc sine
asinh -- Inverse hyperbolic sine
atan -- Arc tangent
atanh -- Inverse hyperbolic tangent
atan2 -- arc tangent of two variables
base_convert -- Convert a number between arbitrary bases
bindec -- Binary to decimal
ceil -- Round fractions up
cos -- Cosine
cosh -- Hyperbolic cosine
decbin -- Decimal to binary
dechex -- Decimal to hexadecimal
decoct -- Decimal to octal
deg2rad --  Converts the number in degrees to the radian equivalent
exp -- e to the power of ...
expm1 --  Returns exp(number) - 1, computed in a way that accurate even when the value of number is close to zero
floor -- Round fractions down
getrandmax -- Show largest possible random value
hexdec -- Hexadecimal to decimal
hypot --  Returns sqrt( num1*num1 + num2*num2)
is_finite -- 
is_infinite -- 
is_nan -- 
lcg_value -- Combined linear congruential generator
log -- Natural logarithm
log10 -- Base-10 logarithm
log1p --  Returns log(1 + number), computed in a way that accurate even when the val ue of number is close to zero
max -- Find highest value
min -- Find lowest value
mt_rand -- Generate a better random value
mt_srand -- Seed the better random number generator
mt_getrandmax -- Show largest possible random value
number_format -- Format a number with grouped thousands
octdec -- Octal to decimal
pi -- Get value of pi
pow -- Exponential expression
rad2deg --  Converts the radian number to the equivalent number in degrees
rand -- Generate a random value
round -- Rounds a float
sin -- Sine
sinh -- Hyperbolic sine
sqrt -- Square root
srand -- Seed the random number generator
tan -- Tangent
tanh -- Hyperbolic tangent