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ST's website does not use the term M4F. Also there is no filter for Hardware Floating Point Unit in parametric search so I guess ST includes floating point unit in all M4 parts.

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Yes all Cortex M4 from ST include a floating point unit and are thus essentially Cortex M4F.

Other manufacturers do this differently. Like pointed out in the comments there is Microchip with the SAM4C has a dual core implementation where one has a FPU and one has not.

So keep looking when you change to a different manufacturer.

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    \$\begingroup\$ They exist, SAM4C is dual core, one with, one without for example. \$\endgroup\$ – Sean Houlihane Feb 8 '18 at 16:51
  • \$\begingroup\$ @SeanHoulihane yeah like I expected. One thing which I learned: if a specification allows something to be done - it is done, regardless of how strange it might seem from the own standpoint. \$\endgroup\$ – Arsenal Feb 8 '18 at 16:54

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