Real constants and functions: Difference between revisions

=={{header|Perl}}==

<perl>use POSIX;

sqrt(x); #square root

log(x); #natural logarithm

exp(x); #exponential

abs(x); #absolute value

POSIX::floor(x); #floor

POSIX::ceil(x); #ceiling

x ** y; #power</perl>

=={{header|Python}}==

<python>import math

math.e #e

math.pi #pi

math.sqrt(x) #square root

math.log(x) #natural logarithm--log base 10 also available (math.log10)

math.exp(x) #exponential

abs(x) #absolute value

math.floor(x) #floor

math.ceil(x) #ceiling

x ** y #power</python>