The following basic math functions are available in Texis:
acos
, asin
, atan
, atan2
, ceil
, cos
,
cosh
, exp
, fabs
, floor
, fmod
,
log
, log10
, pow
, sin
, sinh
, sqrt
,
tan
, tanh
.
All of the above functions call the ANSI C math library function
of the same name, and return a result of type double
.
pow
, atan2
and fmod
take two double arguments,
the remainder take one double argument. Added in version:
2.6.931790000
In addition, the following math-related functions are available:
isNaN(x)
Returns 1 if x
is a float or double NaN (Not a Number) value,
0 if not. This function should be used to test for NaN, rather than
using the equality operator (e.g. x = 'NaN'
), because the
IEEE standard defines NaN == NaN
to be false, not true as
might be expected. Added in version 5.01.1193955406 20071101.