29 lines
872 B
Factor
29 lines
872 B
Factor
! Copyright (C) 2004, 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: kernel-internals
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USING: kernel namespaces math ;
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: bootstrap-cell \ cell get ; inline
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: cells ( m -- n ) cell * ; inline
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: bootstrap-cells bootstrap-cell * ; inline
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: cell-bits ( -- n ) 8 cells ; inline
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: bootstrap-cell-bits 8 bootstrap-cells ; inline
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: tag-address ( x tag -- tagged ) swap tag-bits shift bitor ;
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: tag-header ( id -- tagged ) object-tag tag-address ;
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IN: math
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: i ( -- i ) C{ 0 1 } ; inline
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: -i ( -- -i ) C{ 0 -1 } ; inline
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: e ( -- e ) 2.7182818284590452354 ; inline
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: pi ( -- pi ) 3.14159265358979323846 ; inline
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: epsilon ( -- epsilon ) 2.2204460492503131e-16 ; inline
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: first-bignum ( -- n )
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1 bootstrap-cell-bits tag-bits - 1- shift ;
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: most-positive-fixnum ( -- n ) first-bignum 1- ;
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: most-negative-fixnum ( -- n ) first-bignum neg ;
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