* of any interest to the user of the library. */
/*
- * GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2015 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef __GINAC_UTILS_H__
-#define __GINAC_UTILS_H__
+#ifndef GINAC_UTILS_H
+#define GINAC_UTILS_H
+#include "assertion.h"
+#ifdef HAVE_CONFIG_H
#include "config.h"
+#endif
-#include <string>
#include <functional>
-
-#include "assertion.h"
+#ifdef HAVE_STDINT_H
+#include <stdint.h> // for uintptr_t
+#endif
+#include <string>
namespace GiNaC {
unsigned log2(unsigned n);
+/** Rotate bits of unsigned value by one bit to the left.
+ * This can be necessary if the user wants to define its own hashes. */
+inline unsigned rotate_left(unsigned n)
+{
+ return (n & 0x80000000U) ? (n << 1 | 0x00000001U) : (n << 1);
+}
+
/** Compare two pointers (just to establish some sort of canonical order).
* @return -1, 0, or 1 */
template <class T>
return 0;
}
-/** Rotate bits of unsigned value by one bit to the left. */
-inline unsigned rotate_left(unsigned n)
-{
- return (n & 0x80000000U) ? (n << 1 | 0x00000001U) : (n << 1);
-}
+#ifdef HAVE_STDINT_H
+typedef uintptr_t p_int;
+#else
+typedef unsigned long p_int;
+#endif
/** Truncated multiplication with golden ratio, for computing hash values. */
-inline unsigned golden_ratio_hash(unsigned n)
+inline unsigned golden_ratio_hash(p_int n)
{
// This function works much better when fast arithmetic with at
// least 64 significant bits is available.
-#if SIZEOF_LONG >= 8
+ if (sizeof(long) >= 8) {
// So 'long' has 64 bits. Excellent! We prefer it because it might be
// more efficient than 'long long'.
unsigned long l = n * 0x4f1bbcddUL;
return (unsigned)l;
-#elif SIZEOF_LONG_LONG >= 8
+ }
+#ifdef HAVE_LONG_LONG
+ else if (sizeof(long long) >= 8) {
// This requires 'long long' (or an equivalent 64 bit type)---which is,
// unfortunately, not ANSI-C++-compliant.
// (Yet C99 demands it, which is reason for hope.)
unsigned long long l = n * 0x4f1bbcddULL;
return (unsigned)l;
-#else
+ }
+#endif
// Without a type with 64 significant bits do the multiplication manually
// by splitting n up into the lower and upper two bytes.
const unsigned n0 = (n & 0x0000ffffU);
const unsigned n1 = (n & 0xffff0000U) >> 16;
return (n0 * 0x0000bcddU) + ((n1 * 0x0000bcddU + n0 * 0x00004f1bU) << 16);
-#endif
}
/* Compute the sign of a permutation of a container, with and without an
template <class It>
int permutation_sign(It first, It last)
{
+ using std::swap;
if (first == last)
return 0;
--last;
bool swapped = false;
while (i != first) {
if (*i < *other) {
- std::iter_swap(other, i);
+ swap(*other, *i);
flag = other;
swapped = true;
sign = -sign;
} else if (!(*other < *i))
return 0;
- --i; --other;
+ --i;
+ if (i != first)
+ --other;
}
if (!swapped)
return sign;
swapped = false;
while (i != last) {
if (*other < *i) {
- std::iter_swap(i, other);
+ swap(*i, *other);
flag = other;
swapped = true;
sign = -sign;
} else if (!(*i < *other))
return 0;
- ++i; ++other;
+ ++i;
+ if (i != last)
+ ++other;
}
if (!swapped)
return sign;
sign = -sign;
} else if (!comp(*other, *i))
return 0;
- --i; --other;
+ --i;
+ if (i != first)
+ --other;
}
if (!swapped)
return sign;
sign = -sign;
} else if (!comp(*i, *other))
return 0;
- ++i; ++other;
+ ++i;
+ if (i != last)
+ ++other;
}
if (!swapped)
return sign;
flag = other;
swapped = true;
}
- --i; --other;
+ --i;
+ if (i != first)
+ --other;
}
if (!swapped)
return;
flag = other;
swapped = true;
}
- ++i; ++other;
+ ++i;
+ if (i != last)
+ ++other;
}
if (!swapped)
return;
class ex;
extern const numeric *_num_120_p;
-extern const numeric &_num_120;
extern const ex _ex_120;
extern const numeric *_num_60_p;
-extern const numeric &_num_60;
extern const ex _ex_60;
extern const numeric *_num_48_p;
-extern const numeric &_num_48;
extern const ex _ex_48;
extern const numeric *_num_30_p;
-extern const numeric &_num_30;
extern const ex _ex_30;
extern const numeric *_num_25_p;
-extern const numeric &_num_25;
extern const ex _ex_25;
extern const numeric *_num_24_p;
-extern const numeric &_num_24;
extern const ex _ex_24;
extern const numeric *_num_20_p;
-extern const numeric &_num_20;
extern const ex _ex_20;
extern const numeric *_num_18_p;
-extern const numeric &_num_18;
extern const ex _ex_18;
extern const numeric *_num_15_p;
-extern const numeric &_num_15;
extern const ex _ex_15;
extern const numeric *_num_12_p;
-extern const numeric &_num_12;
extern const ex _ex_12;
extern const numeric *_num_11_p;
-extern const numeric &_num_11;
extern const ex _ex_11;
extern const numeric *_num_10_p;
-extern const numeric &_num_10;
extern const ex _ex_10;
extern const numeric *_num_9_p;
-extern const numeric &_num_9;
extern const ex _ex_9;
extern const numeric *_num_8_p;
-extern const numeric &_num_8;
extern const ex _ex_8;
extern const numeric *_num_7_p;
-extern const numeric &_num_7;
extern const ex _ex_7;
extern const numeric *_num_6_p;
-extern const numeric &_num_6;
extern const ex _ex_6;
extern const numeric *_num_5_p;
-extern const numeric &_num_5;
extern const ex _ex_5;
extern const numeric *_num_4_p;
-extern const numeric &_num_4;
extern const ex _ex_4;
extern const numeric *_num_3_p;
-extern const numeric &_num_3;
extern const ex _ex_3;
extern const numeric *_num_2_p;
-extern const numeric &_num_2;
extern const ex _ex_2;
extern const numeric *_num_1_p;
-extern const numeric &_num_1;
extern const ex _ex_1;
extern const numeric *_num_1_2_p;
-extern const numeric &_num_1_2;
extern const ex _ex_1_2;
extern const numeric *_num_1_3_p;
-extern const numeric &_num_1_3;
extern const ex _ex_1_3;
extern const numeric *_num_1_4_p;
-extern const numeric &_num_1_4;
extern const ex _ex_1_4;
extern const numeric *_num0_p;
extern const basic *_num0_bp;
-extern const numeric &_num0;
extern const ex _ex0;
extern const numeric *_num1_4_p;
-extern const numeric &_num1_4;
extern const ex _ex1_4;
extern const numeric *_num1_3_p;
-extern const numeric &_num1_3;
extern const ex _ex1_3;
extern const numeric *_num1_2_p;
-extern const numeric &_num1_2;
extern const ex _ex1_2;
extern const numeric *_num1_p;
-extern const numeric &_num1;
extern const ex _ex1;
extern const numeric *_num2_p;
-extern const numeric &_num2;
extern const ex _ex2;
extern const numeric *_num3_p;
-extern const numeric &_num3;
extern const ex _ex3;
extern const numeric *_num4_p;
-extern const numeric &_num4;
extern const ex _ex4;
extern const numeric *_num5_p;
-extern const numeric &_num5;
extern const ex _ex5;
extern const numeric *_num6_p;
-extern const numeric &_num6;
extern const ex _ex6;
extern const numeric *_num7_p;
-extern const numeric &_num7;
extern const ex _ex7;
extern const numeric *_num8_p;
-extern const numeric &_num8;
extern const ex _ex8;
extern const numeric *_num9_p;
-extern const numeric &_num9;
extern const ex _ex9;
extern const numeric *_num10_p;
-extern const numeric &_num10;
extern const ex _ex10;
extern const numeric *_num11_p;
-extern const numeric &_num11;
extern const ex _ex11;
extern const numeric *_num12_p;
-extern const numeric &_num12;
extern const ex _ex12;
extern const numeric *_num15_p;
-extern const numeric &_num15;
extern const ex _ex15;
extern const numeric *_num18_p;
-extern const numeric &_num18;
extern const ex _ex18;
extern const numeric *_num20_p;
-extern const numeric &_num20;
extern const ex _ex20;
extern const numeric *_num24_p;
-extern const numeric &_num24;
extern const ex _ex24;
extern const numeric *_num25_p;
-extern const numeric &_num25;
extern const ex _ex25;
extern const numeric *_num30_p;
-extern const numeric &_num30;
extern const ex _ex30;
extern const numeric *_num48_p;
-extern const numeric &_num48;
extern const ex _ex48;
extern const numeric *_num60_p;
-extern const numeric &_num60;
extern const ex _ex60;
extern const numeric *_num120_p;
-extern const numeric &_num120;
extern const ex _ex120;
// Helper macros for class implementations (mostly useful for trivial classes)
#define DEFAULT_CTOR(classname) \
-classname::classname() : inherited(TINFO_##classname) { setflag(status_flags::evaluated | status_flags::expanded); }
-
-#define DEFAULT_UNARCHIVE(classname) \
-ex classname::unarchive(const archive_node &n, lst &sym_lst) \
-{ \
- return (new classname(n, sym_lst))->setflag(status_flags::dynallocated); \
-}
-
-#define DEFAULT_ARCHIVING(classname) \
-classname::classname(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst) {} \
-DEFAULT_UNARCHIVE(classname) \
-void classname::archive(archive_node &n) const \
-{ \
- inherited::archive(n); \
-}
+classname::classname() { setflag(status_flags::evaluated | status_flags::expanded); }
#define DEFAULT_COMPARE(classname) \
int classname::compare_same_type(const basic & other) const \
} // namespace GiNaC
-
-#endif // ndef __GINAC_UTILS_H__
+#endif // ndef GINAC_UTILS_H
git://www.ginac.de / ginac.git / blobdiff