expr: Improve mathfunc handling

Previously math functions with multiple arguments were handling poorly.

For example:      pow(1.0 + 3.0 - 2, .8 * 5)
was evaluated as: pow(1.0 + 3.0, 2 - .8 * 5)

Now commas correctly separate function parameters.

Also, the error messages are more consistent and informative in the case
of an invalid expression.

Update and re-enable tests in tests/expr-old.test accordingly

Signed-off-by: Steve Bennett <steveb@workware.net.au>

0 files changed, 0 insertions, 0 deletions