CydandClaude Fable 5
63312e07f9
- BORLAND/: Borland C++ 4.52 (chosen over 4.5 by byte-match: CODE/RP/CW32.LIB
is identical to 4.52's install lib). BCC32/TLINK32/TLIB/MAKE run natively on
Win11; CODE/BT/OPT.MAK is the shipped BTL4OPT.EXE's exact flag recipe
(extender = Borland PowerPack DPMI32, not Phar Lap TNT).
- restoration/source410/: the literal 1995-form reconstruction of the missing
BT game source (never mixed into CODE/). Round 1-3 state:
* 6 of 10 surviving original TUs COMPILE CLEAN under the period toolchain
(BTMSSN, BTCNSL, BTSCNRL, BTTEAM, BTL4MODE, BTL4ARND) - first builds
since 1996.
* BT_L4/BTL4APP.CPP pilot reconstruction: 12/12 functions, Fail() lands on
its binary-recorded line 400 exactly.
* BT/BTCNSL.HPP: console wire IDs recovered from the binary's ctors
(Killed=9, Damaged=10, ScoreUpdate=13, DeathWithoutHonor=15 [T1];
TeamScore=12 flagged [T4]).
* MUNGA/: 8 engine-header backfills back-dated from the BT412 WinTesla tree
(VDATA numbering decomp-verified; AUDREND's OpenAL-era virtual removed -
the period compiler is the drift detector).
* Tooling: backdate.py (WinTesla->1995 header transform), compile410.sh
(per-TU verification sweep under authentic OPT.MAK flags).
* README: corrected roadmap - MECH.HPP is the capstone grown with the mech
TU reconstructions; BTREG.CPP green = the header-family milestone.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
87 lines
2.0 KiB
Plaintext
87 lines
2.0 KiB
Plaintext
/*------------------------------------------------------------------------
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* filename - log.cas
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*
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* function(s)
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* log - natural logarithm function
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*-----------------------------------------------------------------------*/
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/*
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* C/C++ Run Time Library - Version 6.5
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*
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* Copyright (c) 1987, 1994 by Borland International
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* All Rights Reserved.
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*
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*/
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#pragma inline
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#include <asmrules.h>
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#include <_math.h>
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#include <math.h>
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#include <errno.h>
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#include <stddef.h>
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static unsigned short NANLOG [4] = {0,0,0x0480, 0xFFF8};
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/*--------------------------------------------------------------------------*
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Name log - natural logarithm function
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Usage double log(double x);
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Prototype in math.h
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Description log calculates the natural logarithm of x, which must be
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greater than zero.
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Return value log returns the natural logarithm of x, which must be
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greater than zero.
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*---------------------------------------------------------------------------*/
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#pragma warn -use
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double _FARFUNC log( double x )
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{
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double temp;
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asm FLD DOUBLE (x)
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asm mov ax, W0 (x [6]) /* get the exponent field */
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asm shl ax, 1
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asm jz log_zero
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asm jc log_imaginary
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asm cmp ax, 0FFE0h
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asm je log_infinite
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#ifdef _Windows
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_f87_Log();
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#else
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asm _FAST_ (_FLOG_)
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#endif
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log_end:
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#pragma noretval
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return;
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log_zero:
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asm mov si, SING
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temp = -HUGE_VAL;
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asm jmp short log_complain
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log_infinite:
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asm mov si, OVERFLOW
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temp = HUGE_VAL;
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asm jmp short log_complain
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log_imaginary:
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asm mov si, DOMAIN
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temp = *((double *) NANLOG);
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log_complain:
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asm FSTP ST(0) /* pop x from stack */
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#pragma warn -ret
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return __matherr (_SI, "log", &x, NULL, temp);
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#pragma warn .ret
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}
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#pragma warn .use
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