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Diffstat (limited to 'gnu/lib/libg++/include/Integer.hP')
| -rw-r--r-- | gnu/lib/libg++/include/Integer.hP | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gnu/lib/libg++/include/Integer.hP b/gnu/lib/libg++/include/Integer.hP new file mode 100644 index 000000000000..b8a803942656 --- /dev/null +++ b/gnu/lib/libg++/include/Integer.hP @@ -0,0 +1,30 @@ +// Stuff used to implement the Integer class. +// WARNING: Its internals WILL change! + +/* + Sizes of shifts for multiple-precision arithmetic. + These should not be changed unless Integer representation + as unsigned shorts is changed in the implementation files. +*/ + +#define I_SHIFT (sizeof(short) * CHAR_BIT) +#define I_RADIX ((unsigned long)(1L << I_SHIFT)) +#define I_MAXNUM ((unsigned long)((I_RADIX - 1))) +#define I_MINNUM ((unsigned long)(I_RADIX >> 1)) +#define I_POSITIVE 1 +#define I_NEGATIVE 0 + +/* All routines assume SHORT_PER_LONG > 1 */ +#define SHORT_PER_LONG ((unsigned)(((sizeof(long) + sizeof(short) - 1) / sizeof(short)))) +#define CHAR_PER_LONG ((unsigned)sizeof(long)) + +/* + minimum and maximum sizes for an IntRep +*/ + +#define MINIntRep_SIZE 16 +#define MAXIntRep_SIZE I_MAXNUM + +#ifndef MALLOC_MIN_OVERHEAD +#define MALLOC_MIN_OVERHEAD 4 +#endif |