jurjen.ladeniusandClaude Opus 4.8
f3340e86c6
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
106 lines
3.6 KiB
C
106 lines
3.6 KiB
C
/*-------------------------------------------------------------------------
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float.h - ANSI functions forward declarations
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Copyright (C) 1998, Sandeep Dutta . sandeep.dutta@usa.net
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to the
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Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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As a special exception, if you link this library with other files,
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some of which are compiled with SDCC, to produce an executable,
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this library does not by itself cause the resulting executable to
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be covered by the GNU General Public License. This exception does
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not however invalidate any other reasons why the executable file
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might be covered by the GNU General Public License.
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-------------------------------------------------------------------------*/
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#ifndef __SDC51_FLOAT_H
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#define __SDC51_FLOAT_H 1
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#include <limits.h>
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#define FLT_RADIX 2
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#define FLT_MANT_DIG 24
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#define FLT_EPSILON 1.192092896E-07F
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#define FLT_DIG 6
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#define FLT_MIN_EXP (-125)
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#define FLT_MIN 1.175494351E-38F
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#define FLT_MIN_10_EXP (-37)
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#define FLT_MAX_EXP (+128)
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#define FLT_MAX 3.402823466E+38F
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#define FLT_MAX_10_EXP (+38)
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/* the following deal with IEEE single-precision numbers */
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#if defined(__SDCC_FLOAT_LIB)
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#define EXCESS 126
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#define SIGNBIT ((unsigned long)0x80000000)
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#define __INFINITY ((unsigned long)0x7F800000)
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#define __NAN ((unsigned long)0xFFC00000)
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#define HIDDEN (unsigned long)(1ul << 23)
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#define SIGN(fp) (((unsigned long)(fp) >> (8*sizeof(fp)-1)) & 1)
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#define EXP(fp) (((unsigned long)(fp) >> 23) & (unsigned int) 0x00FF)
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#define MANT(fp) (((fp) & (unsigned long)0x00FFFFFF) | HIDDEN)
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#define NORM 0xff000000
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#define PACK(s,e,m) ((s) | ((unsigned long)(e) << 23) | (m))
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#endif
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float __uchar2fs (unsigned char);
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float __schar2fs (signed char);
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float __uint2fs (unsigned int);
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float __sint2fs (signed int);
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float __ulong2fs (unsigned long);
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float __slong2fs (signed long);
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unsigned char __fs2uchar (float);
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signed char __fs2schar (float);
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unsigned int __fs2uint (float);
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signed int __fs2sint (float);
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unsigned long __fs2ulong (float);
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signed long __fs2slong (float);
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float __fsadd (float, float);
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float __fssub (float, float);
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float __fsmul (float, float);
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float __fsdiv (float, float);
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_Bool __fslt (float, float);
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_Bool __fseq (float, float);
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_Bool __fsgt (float, float);
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#if defined(__SDCC_FLOAT_LIB) && defined(__SDCC_mcs51) && !defined(__SDCC_USE_XSTACK) && !defined(_SDCC_NO_ASM_LIB_FUNCS)
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#define FLOAT_ASM_MCS51
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/* This adds extra code for proper round-off, in
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an attempt to match the results from gcc. */
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#define FLOAT_FULL_ACCURACY
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/* This adds about 66 bytes to the code size and
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significantly speeds up shift operations more
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than 8 bits (common when subtracting numbers
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of significantly different magnitude and scaling
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to fixed point) */
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#define FLOAT_SHIFT_SPEEDUP
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#define sign_a psw.1
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#define sign_b psw.5
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#define exp_a dpl
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#define exp_b dph
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#endif /* using mcs51 assembly */
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#endif /* __SDC51_FLOAT_H */
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