float eval, a puzzle

• Subject: float eval, a puzzle
• From: Richard Fateman
• Date: Mon, 24 Dec 2012 08:56:36 -0800

1-sqrt(2)*sin(atan(1));
1.0-sqrt(2.0)*sin(atan(1.0));
1.0-sqrt(2.0)*sin(atan(1));
1-sqrt(2)*sin(atan(1.0));

All return different expressions.
Hint: the first one is 0.

RJF

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