+++ /dev/null
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp) & SIGNBIT)
-#define EXP(fp) (((fp) >> 23) & (unsigned int) 0x00FF)
-#define MANT(fp) (((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-/* the following deal with IEEE double-precision numbers */
-#define EXCESSD 1022
-#define HIDDEND (1 << 20)
-#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp) ((fp.l.upper) & SIGNBIT)
-#define MANTD(fp) (((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \
- (fp.l.lower >> 22))
-
-union float_long
- {
- float f;
- long l;
- };
-
-float
-__char2fs (char a )
-{
- long sign = 0;
- int exp = 24 + EXCESS;
- volatile union float_long fl;
- long a1 = a;
-
- if (!a1)
- {
- fl.l = 0;
- return (fl.f);
- }
-
- if (a1 < 0)
- {
- sign = SIGNBIT;
- a1 = -a1;
- }
-
- while (a1 < HIDDEN)
- {
- a1 <<= 1;
- exp--;
- }
-
- a1 &= ~HIDDEN;
- /* pack up and go home */
- fl.l = PACK(sign,(unsigned long)exp, a1);
-
- return (fl.f);
-}
+++ /dev/null
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp >> (8*sizeof(fp)-1)) & 1)
-#define EXP(fp) (((fp) >> 23) & (unsigned int) 0x00FF)
-#define MANT(fp) (((fp) & (unsigned long) 0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-union float_long
- {
- float f;
- long l;
- };
-
-/* convert double to int */
-char
-__fs2char (float a1)
-{
- volatile union float_long fl1;
- volatile int exp;
- volatile long l;
-
- fl1.f = a1;
-
- if (!fl1.l)
- return (0);
-
- exp = EXP (fl1.l) - EXCESS - 24;
- l = MANT (fl1.l);
-
- if (exp > 0)
- return (0x7F | SIGN(fl1.l)); /* largest integer */
-
- /* shift down until exp = 0 or l = 0 */
- if (exp < 0 && exp > -25 && l)
- l >>= -exp;
- else
- return (0);
-
- return (SIGN(fl1.l) ? -l : l);
-}
+++ /dev/null
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp >> (8*sizeof(fp)-1)) & 1)
-#define EXP(fp) (((fp) >> 23) & (unsigned int) 0x00FF)
-#define MANT(fp) (((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-union float_long
- {
- float f;
- long l;
- };
-
-/* convert double to int */
-int
-__fs2int (float a1)
-{
- volatile union float_long fl1;
- volatile int exp;
- volatile long l;
-
- fl1.f = a1;
-
- if (!fl1.l)
- return (0);
-
- exp = EXP (fl1.l) - EXCESS - 24;
- l = MANT (fl1.l);
-
- if (exp > 0)
- return (0x7F | SIGN(fl1.l)); /* largest integer */
-
- /* shift down until exp = 0 or l = 0 */
- if (exp < 0 && exp > -25 && l)
- l >>= -exp;
- else
- return (0);
-
- return (SIGN(fl1.l) ? -l : l);
-}
+++ /dev/null
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp >> (8*sizeof(fp)-1)) & 1)
-#define EXP(fp) (((fp) >> 23) & (unsigned int) 0x00FF)
-#define MANT(fp) (((fp) & (unsigned long) 0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-union float_long
- {
- float f;
- long l;
- };
-
-/* convert double to int */
-long
-__fs2long (float a1)
-{
- volatile union float_long fl1;
- volatile int exp;
- volatile long l;
-
- fl1.f = a1;
-
- if (!fl1.l)
- return (0);
-
- exp = EXP (fl1.l) - EXCESS - 24;
- l = MANT (fl1.l);
-
- if (exp > 0)
- return (0x7F | SIGN(fl1.l)); /* largest integer */
-
- /* shift down until exp = 0 or l = 0 */
- if (exp < 0 && exp > -25 && l)
- l >>= -exp;
- else
- return (0);
-
- return (SIGN(fl1.l) ? -l : l);
-}
-
--- /dev/null
+#include <_float.h>
+
+/* convert float to signed char */
+signed char __fs2schar (float f) {
+ signed long sl=__fs2slong(f);
+ if (sl>=SCHAR_MAX)
+ return SCHAR_MAX;
+ if (sl<=SCHAR_MIN)
+ return -SCHAR_MIN;
+ return sl;
+}
--- /dev/null
+#include <_float.h>
+
+/* convert float to signed int */
+signed int __fs2sint (float f) {
+ signed long sl=__fs2slong(f);
+ if (sl>=SINT_MAX)
+ return SINT_MAX;
+ if (sl<=SINT_MIN)
+ return -SINT_MIN;
+ return sl;
+}
--- /dev/null
+#include <_float.h>
+
+/* convert float to signed long */
+signed long __fs2slong (float f) {
+
+ if (!f)
+ return 0;
+
+ if (f<0) {
+ if (f<=SLONG_MIN)
+ return SLONG_MIN;
+ return -__fs2ulong(-f);
+ } else {
+ if (f>=SLONG_MAX)
+ return SLONG_MAX;
+ return __fs2ulong(f);
+ }
+}
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
+#include <_float.h>
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp >> (8*sizeof(fp)-1)) & 1)
-#define EXP(fp) (((fp) >> 23) & (unsigned int)0x00FF)
-#define MANT(fp) (((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-union float_long
- {
- float f;
- long l;
- };
-
-/* convert double to int */
-unsigned char
-__fs2uchar (float a1)
-{
- volatile union float_long fl1;
- volatile int exp;
- volatile long l;
-
- fl1.f = a1;
-
- if (!fl1.l)
- return (0);
-
- exp = EXP (fl1.l) - EXCESS - 24;
- l = MANT (fl1.l);
-
- if (exp > 0)
- return (0x7F | SIGN(fl1.l)); /* largest integer */
-
- /* shift down until exp = 0 or l = 0 */
- if (exp < 0 && exp > -25 && l)
- l >>= -exp;
- else
- return (0);
-
- return (SIGN(fl1.l) ? -(unsigned char)l : (unsigned char)l);
+/* convert float to unsigned char */
+unsigned char __fs2uchar (float f) {
+ unsigned long ul=__fs2ulong(f);
+ if (ul>=UCHAR_MAX) return UCHAR_MAX;
+ return ul;
}
+
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
+#include <_float.h>
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp >> (8*sizeof(fp)-1)) & 1)
-#define EXP(fp) (((fp) >> 23) & (unsigned int) 0x00FF)
-#define MANT(fp) (((fp) & (unsigned long) 0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-union float_long
- {
- float f;
- long l;
- };
-
-/* convert double to int */
-unsigned int
-__fs2uint (float a1)
-{
- volatile union float_long fl1;
- volatile int exp;
- volatile long l;
-
- fl1.f = a1;
-
- if (!fl1.l)
- return (0);
-
- exp = EXP (fl1.l) - EXCESS - 24;
- l = MANT (fl1.l);
-
- if (exp > 0)
- return (0x7F | SIGN(fl1.l)); /* largest integer */
-
- /* shift down until exp = 0 or l = 0 */
- if (exp < 0 && exp > -25 && l)
- l >>= -exp;
- else
- return (0);
-
- return (SIGN(fl1.l) ? -l : l);
+/* convert float to unsigned int */
+unsigned int __fs2uint (float f) {
+ unsigned long ul=__fs2ulong(f);
+ if (ul>=UINT_MAX) return UINT_MAX;
+ return ul;
}
+
** I would appreciate receiving any updates/patches/changes that anyone
** makes, and am willing to be the repository for said changes (am I
** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
**
** Pat Wood
** Pipeline Associates, Inc.
** pipeline!phw@motown.com or
** sun!pipeline!phw or
** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
*/
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
+/* (c)2000: hacked a little by johan.knol@iduna.nl for sdcc */
+
+#include <_float.h>
/* the following deal with IEEE single-precision numbers */
#define EXCESS 126
#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
union float_long
- {
- float f;
- long l;
- };
+{
+ float f;
+ long l;
+};
-/* convert double to int */
+/* convert float to unsigned long */
unsigned long
__fs2ulong (float a1)
{
volatile union float_long fl1;
volatile int exp;
volatile long l;
-
+
fl1.f = a1;
-
- if (!fl1.l)
+
+ if (!fl1.l || SIGN(fl1.l))
return (0);
+ if (a1>=ULONG_MAX)
+ return ULONG_MAX;
+
exp = EXP (fl1.l) - EXCESS - 24;
l = MANT (fl1.l);
+
+ l >>= -exp;
+
+ return l;
+}
- if (exp > 0)
- return (0x7F | SIGN(fl1.l)); /* largest integer */
- /* shift down until exp = 0 or l = 0 */
- if (exp < 0 && exp > -25 && l)
- l >>= -exp;
- else
- return (0);
- return (SIGN(fl1.l) ? -l : l);
-}
+++ /dev/null
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp) & SIGNBIT)
-#define EXP(fp) (((fp) >> 23) & (unsigned int) 0x0FF)
-#define MANT(fp) (((fp) & (unsigned long) 0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-/* the following deal with IEEE double-precision numbers */
-#define EXCESSD 1022
-#define HIDDEND (1 << 20)
-#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp) ((fp.l.upper) & SIGNBIT)
-#define MANTD(fp) (((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \
- (fp.l.lower >> 22))
-
-union float_long
- {
- float f;
- long l;
- };
-
-float
-__int2fs (int a )
-{
- long sign = 0;
- int exp = 24 + EXCESS;
- volatile union float_long fl;
- long a1 = a;
-
- if (!a1)
- {
- fl.l = 0;
- return (fl.f);
- }
-
- if (a1 < 0)
- {
- sign = SIGNBIT;
- a1 = -a1;
- }
-
- while (a1 < HIDDEN)
- {
- a1 <<= 1;
- exp--;
- }
-
- a1 &= ~HIDDEN ;
-
- /* pack up and go home */
- fl.l = PACK(sign,(unsigned long)exp, a1);
-
- return (fl.f);
-}
+++ /dev/null
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp) & SIGNBIT)
-#define EXP(fp) (((fp) >> 23) & (unsigned int)0x00FF)
-#define MANT(fp) (((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-/* the following deal with IEEE double-precision numbers */
-#define EXCESSD 1022
-#define HIDDEND (1 << 20)
-#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp) ((fp.l.upper) & SIGNBIT)
-#define MANTD(fp) (((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \
- (fp.l.lower >> 22))
-
-union float_long
- {
- float f;
- long l;
- };
-
-float
-__long2fs (long a1 )
-{
- long sign = 0;
- int exp = 24 + EXCESS;
- volatile union float_long fl;
-
- if (!a1)
- {
- fl.l = 0;
- return (fl.f);
- }
-
- if (a1 < 0)
- {
- sign = SIGNBIT;
- a1 = -a1;
- }
-
- while (a1 < HIDDEN)
- {
- a1 <<= 1;
- exp--;
- }
-
- a1 &= ~HIDDEN;
- /* pack up and go home */
- fl.l = PACK(sign,(unsigned long)exp, a1);
-
- return (fl.f);
-}
--- /dev/null
+#include <_float.h>
+
+/* convert signed char to float */
+float __schar2fs (signed char sc) {
+ signed long sl=sc;
+ return __slong2fs(sl);
+}
--- /dev/null
+#include <_float.h>
+
+/* convert signed int to float */
+float __sint2fs (signed int si) {
+ signed long sl=si;
+ return __slong2fs(sl);
+}
--- /dev/null
+#include <_float.h>
+
+/* convert signed long to float */
+float __slong2fs (signed long sl) {
+ if (sl<0)
+ return -__ulong2fs(-sl);
+ else
+ return __ulong2fs(sl);
+}
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
+#include <_float.h>
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp) & SIGNBIT)
-#define EXP(fp) (((fp) >> 23) & (unsigned int) 0x00FF)
-#define MANT(fp) (((fp) & (unsigned long) 0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-/* the following deal with IEEE double-precision numbers */
-#define EXCESSD 1022
-#define HIDDEND (1 << 20)
-#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp) ((fp.l.upper) & SIGNBIT)
-#define MANTD(fp) (((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \
- (fp.l.lower >> 22))
-
-union float_long
- {
- float f;
- long l;
- };
-
-float
-__uchar2fs (unsigned char a )
-{
- long sign = 0;
- int exp = 24 + EXCESS;
- volatile union float_long fl;
- long a1 = a;
-
- if (!a1)
- {
- fl.l = 0;
- return (fl.f);
- }
-
- if (a1 < 0)
- {
- sign = SIGNBIT;
- a1 = -a1;
- }
-
- while (a1 < HIDDEN)
- {
- a1 <<= 1;
- exp--;
- }
-
- a1 &= ~HIDDEN;
- /* pack up and go home */
- fl.l = PACK(sign,(unsigned long)exp, a1);
-
- return (fl.f);
+/* convert unsigned char to float */
+float __uchar2fs (unsigned char uc) {
+ unsigned long ul=uc;
+ return __ulong2fs(ul);
}
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact. So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
+#include <_float.h>
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS 126
-#define SIGNBIT ((unsigned long)0x80000000)
-#define HIDDEN (unsigned long)(1 << 23)
-#define SIGN(fp) ((fp) & SIGNBIT)
-#define EXP(fp) (((fp) >> 23) & (unsigned int)0x00FF)
-#define MANT(fp) (((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
-#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-
-/* the following deal with IEEE double-precision numbers */
-#define EXCESSD 1022
-#define HIDDEND (1 << 20)
-#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp) ((fp.l.upper) & SIGNBIT)
-#define MANTD(fp) (((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \
- (fp.l.lower >> 22))
-
-union float_long
- {
- float f;
- long l;
- };
-
-float
-__uint2fs (unsigned int a )
-{
- long sign = 0;
- int exp = 24 + EXCESS;
- volatile union float_long fl;
- long a1 = a;
-
- if (!a1)
- {
- fl.l = 0;
- return (fl.f);
- }
-
- if (a1 < 0)
- {
- sign = SIGNBIT;
- a1 = -a1;
- }
-
- while (a1 < HIDDEN)
- {
- a1 <<= 1;
- exp--;
- }
-
- a1 &= ~HIDDEN ;
- /* pack up and go home */
- fl.l = PACK(sign,(unsigned long)exp, a1);
-
- return (fl.f);
+/* convert unsigned int to float */
+float __uchar2fs (unsigned char ui) {
+ unsigned long ul=ui;
+ return __ulong2fs(ul);
}
** I would appreciate receiving any updates/patches/changes that anyone
** makes, and am willing to be the repository for said changes (am I
** making a big mistake?).
-
-Warning! Only single-precision is actually implemented. This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c. It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
-
**
** Pat Wood
** Pipeline Associates, Inc.
** pipeline!phw@motown.com or
** sun!pipeline!phw or
** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-** -- fixed problems with adding and subtracting zero
-** -- fixed rounding in truncdfsf2
-** -- fixed SWAP define and tested on 386
*/
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386). Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic. I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply. I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference. Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
+/* (c)2000: hacked a little by johan.knol@iduna.nl for sdcc */
+
+#include <_float.h>
/* the following deal with IEEE single-precision numbers */
#define EXCESS 126
#define MANT(fp) (((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
#define PACK(s,e,m) ((s) | ((e) << 23) | (m))
-/* the following deal with IEEE double-precision numbers */
-#define EXCESSD 1022
-#define HIDDEND (1 << 20)
-#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp) ((fp.l.upper) & SIGNBIT)
-#define MANTD(fp) (((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \
- (fp.l.lower >> 22))
-
union float_long
{
float f;
float
__ulong2fs (unsigned long a )
{
- long sign = 0;
int exp = 24 + EXCESS;
volatile union float_long fl;
- long a1 = a;
-
- if (!a1)
- {
- fl.l = 0;
- return (fl.f);
- }
- if (a1 < 0)
+ if (!a)
{
- sign = SIGNBIT;
- a1 = -a1;
+ return 0.0;
}
- while (a1 < HIDDEN)
+ while (a < HIDDEN)
{
- a1 <<= 1;
+ a <<= 1;
exp--;
}
- a1 &= ~HIDDEN ;
+ a &= ~HIDDEN ;
/* pack up and go home */
- fl.l = PACK(sign,(unsigned long)exp, a1);
+ fl.l = PACK(0,(unsigned long)exp, a);
return (fl.f);
}
_fsmul
_fsneq
_fssub
-_char2fs
-_int2fs
-_long2fs
_uchar2fs
_uint2fs
_ulong2fs
-_fs2char
-_fs2int
-_fs2long
+_schar2fs
+_sint2fs
+_slong2fs
_fs2uchar
_fs2uint
_fs2ulong
+_fs2schar
+_fs2sint
+_fs2slong
projects / fw / sdcc / commitdiff