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68 lines
2.0 KiB
68 lines
2.0 KiB
/***
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*cmiscdat.c - miscellaneous C run-time data
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*
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* Copyright (c) 1989-1990, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Includes floating point conversion table (for C float output),
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* a data structure used by signal/exec to tell if a SIGINT handler
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* has been installed, and the public variables _asizeC and _asizeD
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* for conveying memory-model information to the memory-model-independent
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* GRAPHICS.LIB.
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*
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* When floating point i/o conversions are done, but no floating-point
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* variables or expressions are used in the C program, we use the
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* _cfltcvt_tab[] to map these cases to the _fptrap entry point,
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* which prints "floating point not loaded" and dies.
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*
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* This table is initialized to six copies of _fptrap by default.
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* If floating-point is linked in (_fltused), these table entries
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* are reset (see input.c, output.c, fltused.asm, and fltuseda.asm).
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*
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*Revision History:
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* 06-29-89 PHG module created, based on asm version
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* 04-06-90 GJF Added #include <cruntime.h>. Also, fixed the copyright
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* and cleaned up the formatting a bit.
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* 07-31-90 SBM Updated comments slightly
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* 08-29-90 SBM Added #include <internal.h> and <fltintrn.h>,
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* removed _fptrap() prototype
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <internal.h>
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#include <fltintrn.h>
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/*
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... table of (model-dependent) code pointers ...
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Six entries, all point to _fptrap by default,
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but are changed to point to the appropriate
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routine if the _fltused initializer (_cfltcvt_init)
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is linked in.
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this table is used or modified in the following
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source files:
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\clib\stdio\input.c
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\clib\stdio\output.c
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\math\c\fltused.asm
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\math\c\fltuseda.asm
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if the _fltused modules are linked in, then the
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_cfltcvt_init initializer sets the 6 entries of
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_cfltcvt_tab to:
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_cfltcvt
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_cropzeros
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_fassign
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_forcdecpt
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_positive
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_cldcvt
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*/
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void (*_cfltcvt_tab[6])(void) = {
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_fptrap, _fptrap, _fptrap, _fptrap, _fptrap, _fptrap
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};
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void (*_sigintoff)() = 0; /* SIGINT default signal routine */
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