mirror of https://github.com/CGAL/cgal
Remove Fixed_precision_nt
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Sylvain Pion
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854e1de3d2
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1d6de3a243
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@ -1,5 +1,9 @@
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$CGAL/CHANGES
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----------------------------- Release 3.3 ----------------------------------
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- Fixed_precision_nt and Filtered_exact number types removed.
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----------------------------- Release 3.2 ----------------------------------
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The following functionality has been added or changed:
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@ -17,7 +17,6 @@ Curved_kernel
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Developers_manual
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Distance_2
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Distance_3
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Fixed_precision_nt
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Generator
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Geomview
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HalfedgeDS
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@ -111,11 +111,6 @@ number that \ccc{NT} is able to represent, but because it first tries to use an
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approximate value to perform computations it can be faster than the provided
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number type \ccc{NT}. \cgal\ also provides a fixed-precision number type,
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\ccc{Fixed_precision_nt} is a number type that provides 24-bit numbers in fixed point
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representation. This number type provides some specialized predicates
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that are exact and efficient for numbers known to be representable using
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24 bits.
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A number type for doing interval arithmetic, \ccc{Interval_nt}, is provided.
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This number type helps in doing filtering of predicates.
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@ -30,7 +30,6 @@ RingNumberType
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\ccc{float} \\
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\ccc{double} \\
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\ccc{CGAL::Filtered_exact<FieldNumberType, ET>} \\
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\ccc{CGAL::Fixed_precision_nt} \\
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\ccc{CGAL::Gmpq} \\
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\ccc{CGAL::Interval_nt} \\
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\ccc{CGAL::Interval_nt_advanced} \\
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@ -146,7 +146,6 @@ have as a precondition that all numerical values are valid.}
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\CC\ built-in number types \\
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\ccc{CGAL::Filtered_exact<RingNumberType, ET>} \\
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\ccc{CGAL::Fixed_precision_nt} \\
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\ccc{CGAL::Gmpq} \\
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\ccc{CGAL::Gmpz} \\
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\ccc{CGAL::Interval_nt} \\
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@ -64,7 +64,6 @@
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\subsection*{Number Type Classes}
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\ccRefIdfierPage{CGAL::Filtered_exact<CT, ET>} \\
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\ccRefIdfierPage{CGAL::Fixed_precision_nt} \\
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\ccRefIdfierPage{CGAL::Gmpq} \\
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\ccRefIdfierPage{CGAL::Gmpz} \\
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\ccRefIdfierPage{CGAL::Interval_nt<Protected>} \\
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@ -8,10 +8,6 @@
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\input{NumberTypeSupport_ref/intro.tex}
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\input{NumberTypeSupport_ref/abs.tex}
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\input{NumberTypeSupport_ref/Abs_functor.tex}
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\input{NumberTypeSupport_ref/compare.tex}
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@ -24,7 +20,6 @@
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\input{NumberTypeSupport_ref/FieldNumberType.tex}
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\input{NumberTypeSupport_ref/Field_tag.tex}
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\input{NumberTypeSupport_ref/Filtered_exact.tex}
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\input{NumberTypeSupport_ref/Fixed_precision_nt.tex}
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\input{NumberTypeSupport_ref/gcd.tex}
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\input{NumberTypeSupport_ref/Gcd_functor.tex}
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\input{NumberTypeSupport_ref/gmpxx.tex}
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@ -226,8 +226,7 @@ typedef unsigned int FPU_CW_t;
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// The GNU libc version (cf powerpc) is nicer, but doesn't work on libc 5 :(
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// This one also works with CygWin.
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// Note that the ISO C99 version is not enough because of the extended
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// mantissa issue on x86 (required by Fixed_precision_nt, modular computations
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// in the future, but not IA right now).
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// mantissa issue on x86 (may be required by some kinds of computation).
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#define CGAL_IA_SETFPCW(CW) asm volatile ("fldcw %0" : :"m" (CW))
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#define CGAL_IA_GETFPCW(CW) asm volatile ("fnstcw %0" : "=m" (CW))
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typedef unsigned short FPU_CW_t;
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@ -340,7 +339,7 @@ typedef unsigned short FPU_CW_t;
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// This is a version following the ISO C99 standard, which aims at portability.
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// The drawbacks are speed on one hand, and also, on x86, it doesn't fix the
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// extended mantissa issue (this is not a problem for IA, but it is one for
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// Fixed_precision_nt, and some future modular computations as well).
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// some future modular computations).
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#define CGAL_IA_SETFPCW(CW) fesetround(CW)
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#define CGAL_IA_GETFPCW(CW) CW = fegetround()
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typedef int FPU_CW_t;
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@ -379,7 +378,6 @@ FPU_get_and_set_cw (FPU_CW_t cw)
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// The following is meant to truncate the mantissa of x86 FPUs to 53 bits.
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// It is used by the Fixed_precision_nt.
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inline void force_ieee_double_precision()
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{
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#if defined __i386__ || defined _MSC_VER || defined __BORLANDC__
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@ -90,15 +90,6 @@ CGAL_END_NAMESPACE
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CGAL_BEGIN_NAMESPACE
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// Fixed_precision_nt
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class Fixed_precision_nt;
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double to_double(Fixed_precision_nt);
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bool is_finite(Fixed_precision_nt);
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bool is_valid(Fixed_precision_nt);
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std::pair<double,double> to_interval(Fixed_precision_nt);
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#if 0
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// Polynomial
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@ -3,7 +3,6 @@
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#include <CGAL/Quotient.h>
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#include <CGAL/MP_Float.h>
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#include <CGAL/Lazy_exact_nt.h>
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#include <CGAL/Fixed_precision_nt.h>
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#include <CGAL/Interval_nt.h>
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#include <CGAL/Filtered_exact.h>
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@ -72,7 +71,6 @@ int main()
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TESTIT(long double, "long double")
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// CGAL number types
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TESTIT(CGAL::Fixed_precision_nt, "Fixed_precision_nt")
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TESTIT(CGAL::MP_Float, "MP_Float")
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TESTIT(CGAL::Quotient<int>, "Quotient<int>")
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TESTIT(QMPF, "Quotient<MP_Float>")
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