corecrt_startup.h: Add more declarations.

include/msvcrt/corecrt_startup.h

@@ -34,6 +34,9 @@ typedef struct _onexit_table_t {
 
 typedef int (__cdecl *_onexit_t)(void);
 
+struct _exception;
+typedef int (__cdecl *_UserMathErrorFunctionPointer)(struct _exception *);
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -44,11 +47,16 @@ _ACRTIMP void __cdecl __wgetmainargs(int *, wchar_t ***, wchar_t ***, int, int *
 #define _set_app_type __set_app_type
 #endif /* _UCRT */
 
+_ACRTIMP void      __cdecl __setusermatherr(_UserMathErrorFunctionPointer);
 _ACRTIMP errno_t   __cdecl _configure_narrow_argv(_crt_argv_mode);
 _ACRTIMP errno_t   __cdecl _configure_wide_argv(_crt_argv_mode);
+_ACRTIMP int       __cdecl _crt_at_quick_exit(_PVFV);
+_ACRTIMP int       __cdecl _crt_atexit(_PVFV);
 _ACRTIMP int       __cdecl _execute_onexit_table(_onexit_table_t*);
 _ACRTIMP char    **__cdecl _get_initial_narrow_environment(void);
 _ACRTIMP wchar_t **__cdecl _get_initial_wide_environment(void);
+_ACRTIMP char*     __cdecl _get_narrow_winmain_command_line(void);
+_ACRTIMP wchar_t*  __cdecl _get_wide_winmain_command_line(void);
 _ACRTIMP int       __cdecl _initialize_narrow_environment(void);
 _ACRTIMP int       __cdecl _initialize_onexit_table(_onexit_table_t*);
 _ACRTIMP int       __cdecl _initialize_wide_environment(void);