= List of mathematical functions known to Dynare =

The Dynare preprocessor knows only how to derive automatically a finite list of mathematical functions. We are currently working on dealing with arbitrary, unknown, functions.

Here is the list of functions that can currently be used in the {{{model}}} block (for setting the value of parameters, or in the {{{initval}}} type blocks, you can still use any function known to Matlab/Octave, provided that you only use scalar arguments).

== Arithmetic operators ==
{{{+ - * / ^}}}

== Logical operators ==
{{{ < > <= >= != == }}}

These operators evaluate to 1 if the logical expression is true, 0 if the logical expression is false.

Note: the derivative isn't defined on the kink point and these operators shouldn't be used in stochastic models

== Exponential and logarithm ==
 * exp()
 * log() can also be written ln()
 * log10()

== Trigonometric functions ==
 * sin()
 * cos()
 * tan()
 * asin()
 * acos()
 * atan()

== Cumulative distribution functions ==
 * normcdf(x,m,s) normal cumulative distribution function with mean {{{m}}} and standard deviation {{{s}}}
 * normcdf(x) normal cumulative distribution function with mean {{{0}}} and standard deviation {{{1}}}
For the normal density function, you need to enter the formula explicitly
  
== Miscellaneous ==
 * sqrt()
 * max(a,b) not to be used in stochastic models
 * min(a,b) not to be used in stochastic models