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Spec: Single precision floating point arithmetic is sufficient

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Alex Hirsch 2021-02-05 00:50:00 +01:00
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specification.md
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@ -418,7 +418,9 @@ The mC compiler targets x86 and uses GCC as back-end compiler.
On an x86_64 system, GCC multi-lib support must be available and the flag `-m32` is passed to the compiler. On an x86_64 system, GCC multi-lib support must be available and the flag `-m32` is passed to the compiler.
The code generated by the back-end is compiled with the [GNU Assembler](https://en.wikipedia.org/wiki/GNU_Assembler) (by GCC). The code generated by the back-end is compiled with the [GNU Assembler](https://en.wikipedia.org/wiki/GNU_Assembler) (by GCC).
Pay special attention to floating point and integer handling.
Single precision floating point arithmetic is sufficient.
The `print_float` built-in only outputs 2 decimal places.
Use [cdecl calling convention](https://en.wikipedia.org/wiki/X86_calling_conventions#cdecl). Use [cdecl calling convention](https://en.wikipedia.org/wiki/X86_calling_conventions#cdecl).
It is paramount to correctly implement the calling convention, otherwise the stack may get corrupted during function calls and returns. It is paramount to correctly implement the calling convention, otherwise the stack may get corrupted during function calls and returns.