| Text string formula functions | MathML equivalents in SBML Levels 2 and 3 | 
 | acos | arccos | 
 | asin | arcsin | 
 | atan | arctan | 
 | ceil | ceiling | 
 | log | ln | 
 | log10(x) | log(x)orlog(10, x) | 
 | pow(x, y) | power(x, y) | 
 | sqr(x) | power(x, 2) | 
 | sqrt(x) | root(x)orroot(2, x) | 
Table comparing the names of certain
functions in the SBML text-string formula syntax and MathML.  The left
column shows the names of functions recognized by SBML_parseFormula(); the
right column shows their equivalent function names in MathML 2.0, used
in SBML Levels 2 and 3.