31 lines
902 B
Plaintext
31 lines
902 B
Plaintext
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// Stuff used to implement the Integer class.
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// WARNING: Its internals WILL change!
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/*
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Sizes of shifts for multiple-precision arithmetic.
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These should not be changed unless Integer representation
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as unsigned shorts is changed in the implementation files.
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*/
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#define I_SHIFT (sizeof(short) * CHAR_BIT)
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#define I_RADIX ((unsigned long)(1L << I_SHIFT))
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#define I_MAXNUM ((unsigned long)((I_RADIX - 1)))
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#define I_MINNUM ((unsigned long)(I_RADIX >> 1))
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#define I_POSITIVE 1
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#define I_NEGATIVE 0
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/* All routines assume SHORT_PER_LONG > 1 */
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#define SHORT_PER_LONG ((unsigned)(((sizeof(long) + sizeof(short) - 1) / sizeof(short))))
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#define CHAR_PER_LONG ((unsigned)sizeof(long))
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/*
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minimum and maximum sizes for an IntRep
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*/
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#define MINIntRep_SIZE 16
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#define MAXIntRep_SIZE I_MAXNUM
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#ifndef MALLOC_MIN_OVERHEAD
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#define MALLOC_MIN_OVERHEAD 4
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#endif
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