Add smtFloatMode option to VerifierOptions. Refs #79.
#81
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This allows users to switch between `FloatUninterpreted` (the default setting, where all floating-point operations are treated as uninterpreted functions) and `FloatIEEE` (where floating-point values are treated as IEEE-754 floats). While `FloatIEEE` is unable to handle floating-point operations that are not native to SMT-LIB (`sin`, `cos`, `tan`, etc.), it can handle more specifications in which a C compiler optimizes the floating-point expressions found in the generated C code. An example of where this is crucible can be found in the newly added `FPNegation` example, which was inspired by Ogma.
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This allows users to switch between
FloatUninterpreted(the default setting, where all floating-point operations are treated as uninterpreted functions) andFloatIEEE(where floating-point values are treated as IEEE-754 floats). WhileFloatIEEEis unable to handle floating-point operations that are not native to SMT-LIB (sin,cos,tan, etc.), it can handle more specifications in which a C compiler optimizes the floating-point expressions found in the generated C code. An example of where this is crucible can be found in the newly addedFPNegationexample, which was inspired by Ogma.Fixes #79.