convert ln to log for matlab

hetalang · Jul 15, 2024 · 1c8400a · 1c8400a
1 parent 7cb5e5c
commit 1c8400a
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diff --git a/src/matlab-export/expression.js b/src/matlab-export/expression.js
@@ -36,6 +36,9 @@ Expression.prototype.toMatlabString = function(substituteByDefinitions = true) {
     if (node.type==='FunctionNode' && node.fn.name==='log2') {
       return `(log(${node.args[0].toString(options)})/log(2))`;
     }
+    if (node.type==='FunctionNode' && node.fn.name==='ln') {
+      return `log(${node.args[0].toString(options)})`;
+    }
     if (node.type==='SymbolNode' && node.name === 't') {
       return 'time';
     }

diff --git a/test/core/expression.js b/test/core/expression.js
@@ -162,4 +162,8 @@ describe('Expession exports', () => {
     let expr = Expression.fromString('exp(-kel*t)');
     expect(expr.toMatlabString()).to.be.equal('exp(-kel * time)');
   });
+  it('toMatlabString() for "ln(x)"', () => {
+    let expr = Expression.fromString('ln(x)');
+    expect(expr.toMatlabString()).to.be.equal('log(x)');
+  });
 });