qzdoom/gdtoa/strtorQ.c

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About a week's worth of changes here. As a heads-up, I wouldn't be surprised if this doesn't build in Linux right now. The CMakeLists.txt were checked with MinGW and NMake, but how they fair under Linux is an unknown to me at this time. - Converted most sprintf (and all wsprintf) calls to either mysnprintf or FStrings, depending on the situation. - Changed the strings in the wbstartstruct to be FStrings. - Changed myvsnprintf() to output nothing if count is greater than INT_MAX. This is so that I can use a series of mysnprintf() calls and advance the pointer for each one. Once the pointer goes beyond the end of the buffer, the count will go negative, but since it's an unsigned type it will be seen as excessively huge instead. This should not be a problem, as there's no reason for ZDoom to be using text buffers larger than 2 GB anywhere. - Ripped out the disabled bit from FGameConfigFile::MigrateOldConfig(). - Changed CalcMapName() to return an FString instead of a pointer to a static buffer. - Changed startmap in d_main.cpp into an FString. - Changed CheckWarpTransMap() to take an FString& as the first argument. - Changed d_mapname in g_level.cpp into an FString. - Changed DoSubstitution() in ct_chat.cpp to place the substitutions in an FString. - Fixed: The MAPINFO parser wrote into the string buffer to construct a map name when given a Hexen map number. This was fine with the old scanner code, but only a happy coincidence prevents it from crashing with the new code - Added the 'B' conversion specifier to StringFormat::VWorker() for printing binary numbers. - Added CMake support for building with MinGW, MSYS, and NMake. Linux support is probably broken until I get around to booting into Linux again. Niceties provided over the existing Makefiles they're replacing: * All command-line builds can use the same build system, rather than having a separate one for MinGW and another for Linux. * Microsoft's NMake tool is supported as a target. * Progress meters. * Parallel makes work from a fresh checkout without needing to be primed first with a single-threaded make. * Porting to other architectures should be simplified, whenever that day comes. - Replaced the makewad tool with zipdir. This handles the dependency tracking itself instead of generating an external makefile to do it, since I couldn't figure out how to generate a makefile with an external tool and include it with a CMake-generated makefile. Where makewad used a master list of files to generate the package file, zipdir just zips the entire contents of one or more directories. - Added the gdtoa package from netlib's fp library so that ZDoom's printf-style formatting can be entirely independant of the CRT. SVN r1082 (trunk)
2008-07-23 04:57:26 +00:00
/****************************************************************
The author of this software is David M. Gay.
Copyright (C) 1998, 2000 by Lucent Technologies
All Rights Reserved
Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of Lucent or any of its entities
not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
****************************************************************/
/* Please send bug reports to David M. Gay (dmg at acm dot org,
* with " at " changed at "@" and " dot " changed to "."). */
#include "gdtoaimp.h"
#undef _0
#undef _1
/* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */
#ifdef IEEE_MC68k
#define _0 0
#define _1 1
#define _2 2
#define _3 3
#endif
#ifdef IEEE_8087
#define _0 3
#define _1 2
#define _2 1
#define _3 0
#endif
void
#ifdef KR_headers
ULtoQ(L, bits, exp, k) ULong *L; ULong *bits; Long exp; int k;
#else
ULtoQ(ULong *L, ULong *bits, Long exp, int k)
#endif
{
switch(k & STRTOG_Retmask) {
case STRTOG_NoNumber:
case STRTOG_Zero:
L[0] = L[1] = L[2] = L[3] = 0;
break;
case STRTOG_Normal:
case STRTOG_NaNbits:
L[_3] = bits[0];
L[_2] = bits[1];
L[_1] = bits[2];
L[_0] = (bits[3] & ~0x10000) | ((exp + 0x3fff + 112) << 16);
break;
case STRTOG_Denormal:
L[_3] = bits[0];
L[_2] = bits[1];
L[_1] = bits[2];
L[_0] = bits[3];
break;
case STRTOG_Infinite:
L[_0] = 0x7fff0000;
L[_1] = L[_2] = L[_3] = 0;
break;
case STRTOG_NaN:
L[0] = ld_QNAN0;
L[1] = ld_QNAN1;
L[2] = ld_QNAN2;
L[3] = ld_QNAN3;
}
if (k & STRTOG_Neg)
L[_0] |= 0x80000000L;
}
int
#ifdef KR_headers
strtorQ(s, sp, rounding, L) CONST char *s; char **sp; int rounding; void *L;
#else
strtorQ(CONST char *s, char **sp, int rounding, void *L)
#endif
{
static CONST FPI fpi0 = { 113, 1-16383-113+1, 32766-16383-113+1, 1, SI };
CONST FPI *fpi;
FPI fpi1;
ULong bits[4];
Long exp;
int k;
fpi = &fpi0;
if (rounding != FPI_Round_near) {
fpi1 = fpi0;
fpi1.rounding = rounding;
fpi = &fpi1;
}
k = strtodg(s, sp, fpi, &exp, bits);
ULtoQ((ULong*)L, bits, exp, k);
return k;
}