On Fri, 22 Jun 2012, Mans Rullgard wrote:

This adds a fallback for cbrtf() using powf(x, 1/3).  Since
powf() with a non-integer exponent requires a non-negative
base, special handling of negative inputs is needed.

Signed-off-by: Mans Rullgard <[email protected]>
---
Not tested on anything without cbrtf().

Tested on MSVC, works as intended, so LGTM too.

// Martin
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