Use float instead of double for test values
Use float instead of double for test values

Summary:
Use explicit float values to remove warning.
Closes https://github.com/facebook/yoga/pull/318

Reviewed By: gkassabli

Differential Revision: D4383687

Pulled By: emilsjolander

fbshipit-source-id: a820bf829f74a7bdaefc39e783d03b42e27d0b3b

rmarinho/yoga,facebook/yoga,yihuang/css-layout,yihuang/css-layout,yihuang/css-layout,facebook/yoga,yihuang/css-layout,facebook/css-layout,yihuang/css-layout,rmarinho/yoga,rmarinho/yoga,yihuang/css-layout,yihuang/css-layout,facebook/css-layout,rmarinho/yoga,facebook/yoga,facebook/yoga,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout,rmarinho/yoga,facebook/yoga,rmarinho/yoga,yihuang/css-layout,yihuang/css-layout,facebook/css-layout,facebook/yoga,facebook/css-layout,facebook/css-layout,yihuang/css-layout,facebook/yoga,rmarinho/yoga,rmarinho/yoga,facebook/css-layout,rmarinho/yoga,rmarinho/yoga,facebook/css-layout,facebook/yoga