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Diffstat (limited to 'doc/manual.rst')
| -rw-r--r-- | doc/manual.rst | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/doc/manual.rst b/doc/manual.rst index a646b7963..09b9b4d78 100644 --- a/doc/manual.rst +++ b/doc/manual.rst @@ -480,7 +480,6 @@ The type suffixes are: ``'d`` float64 ``'f32`` float32 ``'f64`` float64 - ``'f128`` float128 ================= ========================= Floating point literals may also be in binary, octal or hexadecimal @@ -1587,7 +1586,7 @@ details like this when mixing garbage collected data with unmanaged memory. Not nil annotation ------------------ -All types for that ``nil`` is a valid value can be annotated to +All types for which ``nil`` is a valid value can be annotated to exclude ``nil`` as a valid value with the ``not nil`` annotation: .. code-block:: nim @@ -1664,12 +1663,12 @@ Nim supports these `calling conventions`:idx:\: and another one for the pointer to implicitly passed environment. `stdcall`:idx: - This the stdcall convention as specified by Microsoft. The generated C + This is the stdcall convention as specified by Microsoft. The generated C procedure is declared with the ``__stdcall`` keyword. `cdecl`:idx: The cdecl convention means that a procedure shall use the same convention - as the C compiler. Under windows the generated C procedure is declared with + as the C compiler. Under Windows the generated C procedure is declared with the ``__cdecl`` keyword. `safecall`:idx: @@ -7365,6 +7364,17 @@ Example: embedsC() +``nimbase.h`` defines ``NIM_EXTERNC`` C macro that can be used for +``extern "C"`` code to work with both ``nim c`` and ``nim cpp``, eg: + +.. code-block:: Nim + proc foobar() {.importc:"$1".} + {.emit: """ + #include <stdio.h> + NIM_EXTERNC + void fun(){} + """.} + For backwards compatibility, if the argument to the ``emit`` statement is a single string literal, Nim symbols can be referred to via backticks. This usage is however deprecated. |