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Diffstat (limited to 'gnu/lib/libg++/include/values.h')
| -rw-r--r-- | gnu/lib/libg++/include/values.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/gnu/lib/libg++/include/values.h b/gnu/lib/libg++/include/values.h new file mode 100644 index 000000000000..529c5e7ae96a --- /dev/null +++ b/gnu/lib/libg++/include/values.h @@ -0,0 +1,173 @@ +/* +Copyright (C) 1988 Free Software Foundation + written by Doug Lea (dl@rocky.oswego.edu) + +This file is part of the GNU C++ Library. This library is free +software; you can redistribute it and/or modify it under the terms of +the GNU Library General Public License as published by the Free +Software Foundation; either version 2 of the License, or (at your +option) any later version. This library is distributed in the hope +that it will be useful, but WITHOUT ANY WARRANTY; without even the +implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR +PURPOSE. See the GNU Library General Public License for more details. +You should have received a copy of the GNU Library General Public +License along with this library; if not, write to the Free Software +Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + + +#ifndef _VALUES_H_ +#define _VALUES_H_ + +#define BITSPERBYTE 8 +#define BITS(type) (BITSPERBYTE * (int)sizeof(type)) + +#define CHARBITS BITS(char) +#define SHORTBITS BITS(short) +#define INTBITS BITS(int) +#define LONGBITS BITS(long) +#define PTRBITS BITS(char*) +#define DOUBLEBITS BITS(double) +#define FLOATBITS BITS(float) + +#define MINSHORT ((short)(1 << (SHORTBITS - 1))) +#define MININT (1 << (INTBITS - 1)) +#define MINLONG (1L << (LONGBITS - 1)) + +#define MAXSHORT ((short)~MINSHORT) +#define MAXINT (~MININT) +#define MAXLONG (~MINLONG) + +#define HIBITS MINSHORT +#define HIBITL MINLONG + +#if defined(sun) || defined(hp300) || defined(hpux) || defined(masscomp) || defined(sgi) +#ifdef masscomp +#define MAXDOUBLE \ +({ \ + double maxdouble_val; \ + \ + __asm ("fmove%.d #0x7fefffffffffffff,%0" /* Max double */ \ + : "=f" (maxdouble_val) \ + : /* no inputs */); \ + maxdouble_val; \ +}) +#define MAXFLOAT ((float) 3.40e+38) +#else +#define MAXDOUBLE 1.79769313486231470e+308 +#define MAXFLOAT ((float)3.40282346638528860e+38) +#endif +#define MINDOUBLE 4.94065645841246544e-324 +#define MINFLOAT ((float)1.40129846432481707e-45) +#define _IEEE 1 +#define _DEXPLEN 11 +#define _FEXPLEN 8 +#define _HIDDENBIT 1 +#define DMINEXP (-(DMAXEXP + DSIGNIF - _HIDDENBIT - 3)) +#define FMINEXP (-(FMAXEXP + FSIGNIF - _HIDDENBIT - 3)) +#define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) +#define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) + +#elif defined(sony) +#define MAXDOUBLE 1.79769313486231470e+308 +#define MAXFLOAT ((float)3.40282346638528860e+38) +#define MINDOUBLE 2.2250738585072010e-308 +#define MINFLOAT ((float)1.17549435e-38) +#define _IEEE 1 +#define _DEXPLEN 11 +#define _FEXPLEN 8 +#define _HIDDENBIT 1 +#define DMINEXP (-(DMAXEXP + DSIGNIF - _HIDDENBIT - 3)) +#define FMINEXP (-(FMAXEXP + FSIGNIF - _HIDDENBIT - 3)) +#define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) +#define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) + +#elif defined(sequent) +extern double _maxdouble, _mindouble; +extern float _maxfloat, _minfloat; +#define MAXDOUBLE _maxdouble +#define MAXFLOAT _maxfloat +#define MINDOUBLE _mindouble +#define MINFLOAT _minfloat +#define _IEEE 1 +#define _DEXPLEN 11 +#define _FEXPLEN 8 +#define _HIDDENBIT 1 +#define DMINEXP (-(DMAXEXP - 3)) +#define FMINEXP (-(FMAXEXP - 3)) +#define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) +#define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) + +#elif defined(i386) +#define MAXDOUBLE 1.79769313486231570e+308 +#define MAXFLOAT ((float)3.40282346638528860e+38) +#define MINDOUBLE 2.22507385850720140e-308 +#define MINFLOAT ((float)1.17549435082228750e-38) +#define _IEEE 0 +#define _DEXPLEN 11 +#define _FEXPLEN 8 +#define _HIDDENBIT 1 +#define DMINEXP (-DMAXEXP) +#define FMINEXP (-FMAXEXP) +#define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) +#define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) + +/* from Andrew Klossner <andrew%frip.wv.tek.com@relay.cs.net> */ +#elif defined(m88k) + /* These are "good" guesses ... + I'll figure out the true mins and maxes later, at the time I find + out the mins and maxes that the compiler can tokenize. */ +#define MAXDOUBLE 1.79769313486231e+308 +#define MAXFLOAT ((float)3.40282346638528e+38) +#define MINDOUBLE 2.22507385850720e-308 +#define MINFLOAT ((float)1.17549435082228e-38) +#define _IEEE 1 +#define _DEXPLEN 11 +#define _FEXPLEN 8 +#define _HIDDENBIT 1 +#define DMINEXP (1-DMAXEXP) +#define FMINEXP (1-FMAXEXP) +#define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) +#define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) + +#elif defined(convex) +#define MAXDOUBLE 8.9884656743115785e+306 +#define MAXFLOAT ((float) 1.70141173e+38) +#define MINDOUBLE 5.5626846462680035e-308 +#define MINFLOAT ((float) 2.93873588e-39) +#define _IEEE 0 +#define _DEXPLEN 11 +#define _FEXPLEN 8 +#define _HIDDENBIT 1 +#define DMINEXP (-DMAXEXP) +#define FMINEXP (-FMAXEXP) +#define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) +#define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) + +/* #elif defined(vax) */ +/* use vax versions by default -- they seem to be the most conservative */ +#else + +#define MAXDOUBLE 1.701411834604692293e+38 +#define MINDOUBLE (2.938735877055718770e-39) + +#define MAXFLOAT 1.7014117331926443e+38 +#define MINFLOAT 2.9387358770557188e-39 + +#define _IEEE 0 +#define _DEXPLEN 8 +#define _FEXPLEN 8 +#define _HIDDENBIT 1 +#define DMINEXP (-DMAXEXP) +#define FMINEXP (-FMAXEXP) +#define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) +#define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) +#endif + +#define DSIGNIF (DOUBLEBITS - _DEXPLEN + _HIDDENBIT - 1) +#define FSIGNIF (FLOATBITS - _FEXPLEN + _HIDDENBIT - 1) +#define DMAXPOWTWO ((double)(1L << LONGBITS -2)*(1L << DSIGNIF - LONGBITS +1)) +#define FMAXPOWTWO ((float)(1L << FSIGNIF - 1)) + +#endif /* !_VALUES_H_ */ + |