--- /dev/null
+/*
+ * Copyright (c) 1999
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Copyright (c) 1999
+ * Boris Fomitchev
+ *
+ * This material is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * Permission to use or copy this software for any purpose is hereby granted
+ * without fee, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ */
+
+#include "stlport_prefix.h"
+
+#include <cmath>
+#include <ios>
+#include <locale>
+
+#if defined (__DECCXX)
+# define NDIG 400
+#else
+# define NDIG 82
+#endif
+
+#if defined (_STLP_NO_LONG_DOUBLE)
+# define MAXECVT 17
+# define MAXFCVT 18
+typedef double max_double_type;
+#else
+# define MAXECVT 35
+# define MAXFCVT 36
+typedef long double max_double_type;
+#endif
+
+#define MAXFSIG MAXECVT
+#define MAXESIZ 5
+
+#define todigit(x) ((x)+'0')
+
+#if defined (_STLP_UNIX)
+
+# if defined (__sun)
+# include <floatingpoint.h>
+# endif
+
+# if defined (__sun) || defined (__digital__) || defined (__sgi) || defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR)
+// DEC, SGI & Solaris need this
+# include <values.h>
+# include <nan.h>
+# endif
+
+# if defined (__QNXNTO__) || ( defined(__GNUC__) && defined(__APPLE__) ) || defined(_STLP_USE_UCLIBC) /* 0.9.26 */ || \
+ defined(__FreeBSD__)
+# define USE_SPRINTF_INSTEAD
+# endif
+
+# if defined( _AIX ) // JFA 3-Aug-2000
+# include <math.h>
+# include <float.h>
+# endif
+
+#endif
+
+#include <cstdio>
+#include <cstdlib>
+
+//#if defined(_CRAY)
+//# include <stdlib.h>
+//#endif
+
+#if defined (_STLP_MSVC_LIB) || defined (__MINGW32__) || defined (__BORLANDC__) || defined (__DJGPP) || \
+ defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR)
+# include <float.h>
+#endif
+
+#if defined(__MRC__) || defined(__SC__) || defined(_CRAY) //*TY 02/24/2000 - added support for MPW
+# include <fp.h>
+#endif
+
+#if defined (__CYGWIN__)
+# include <ieeefp.h>
+#endif
+
+#if defined (__MSL__)
+# include <cstdlib> // for atoi
+# include <cstdio> // for snprintf
+# include <algorithm>
+# include <cassert>
+#endif
+
+#if defined (__ISCPP__)
+# include <cfloat>
+#endif
+
+#include <algorithm>
+
+#if defined (__DMC__)
+# define snprintf _snprintf
+#endif
+
+#if defined(__hpux) && (!defined(_INCLUDE_HPUX_SOURCE) || defined(__GNUC__))
+extern "C" double erf(double);
+extern "C" double erfc(double);
+extern "C" double gamma(double); /* obsolescent */
+extern "C" double hypot(double, double);
+extern "C" int isnan(double);
+extern "C" double j0(double);
+extern "C" double j1(double);
+extern "C" double jn(int, double);
+extern "C" double lgamma(double);
+extern "C" double y0(double);
+extern "C" double y1(double);
+extern "C" double yn(int, double);
+
+# define HUGE_VALF _SINFINITY
+# define INFINITY _SINFINITY
+# define NAN _SQNAN
+
+# define isnan(x) _ISNAN(x)
+# define isinf(x) _ISINF(x)
+# define signbit(x) _SIGNBIT(x)
+# define isfinite(x) _ISFINITE(x)
+# define isnormal(x) _ISNORMAL(x)
+# define fpclassify(x) _FPCLASSIFY(x)
+# define isunordered(x,y) _ISUNORDERED(x,y)
+# define isgreater(x,y) _ISGREATER(x,y)
+# define isgreaterequal(x,y) _ISGREATEREQUAL(x,y)
+# define isless(x,y) _ISLESS(x,y)
+# define islessequal(x,y) _ISLESSEQUAL(x,y)
+# define islessgreater(x,y) _ISLESSGREATER(x,y)
+
+# define FP_NORMAL 0
+# define FP_ZERO 1
+# define FP_INFINITE 2
+# define FP_SUBNORMAL 3
+# define FP_NAN 4
+
+# define DECIMAL_DIG 17
+
+# define _IS64(x) (sizeof(x) == sizeof(double))
+# define _IS32(x) (sizeof(x) == sizeof(float))
+
+extern "C" {
+ extern double copysign(double, double);
+ extern const float _SINFINITY;
+ extern const float _SQNAN;
+# if defined (_PA_RISC)
+# define _ISNAN(x) (_IS32(x)?_Isnanf(x):(isnan)(x))
+# define _ISINF(x) (_IS32(x)?_Isinff(x):_Isinf(x))
+# define _SIGNBIT(x) (_IS32(x)?_Signbitf(x):_Signbit(x))
+# define _ISFINITE(x) (_IS32(x)?_Isfinitef(x):_Isfinite(x))
+# define _ISNORMAL(x) (_IS32(x)?_Isnormalf(x):_Isnormal(x))
+# define _FPCLASSIFY(x) (_IS32(x)?_Fpclassifyf(x)>>1:_Fpclassify(x)>>1)
+# define _ISUNORDERED(x,y) (_IS32(x)&&_IS32(y)?_Isunorderedf(x,y):_Isunordered(x,y))
+ extern int _Signbit(double);
+ extern int _Signbitf(float);
+ extern int _Isnanf(float);
+ extern int _Isfinite(double);
+ extern int _Isfinitef(float);
+ extern int _Isinf(double);
+ extern int _Isinff(float);
+ extern int _Isnormal(double);
+ extern int _Isnormalf(float);
+ extern int _Isunordered(double, double);
+ extern int _Isunorderedf(float, float);
+ extern int _Fpclassify(double);
+ extern int _Fpclassifyf(float);
+# else
+# include "math_ia64_internal.h"
+# define _FPCLASSIFY(x) (_IS32(x)?_Fpclassf(x):_Fpclass(x))
+ extern int _Fpclass(double);
+ extern int _Fpclassf(float);
+# endif
+}
+
+# if !defined (_INCLUDE_XOPEN_SOURCE_EXTENDED)
+extern "C" char *fcvt(double, int, int *, int *);
+extern "C" char *ecvt(double, int, int *, int *);
+# endif
+# if !defined (_INCLUDE_HPUX_SOURCE)
+# if !defined (_LONG_DOUBLE)
+# define _LONG_DOUBLE
+typedef struct {
+ uint32_t word1, word2, word3, word4;
+} long_double;
+# endif /* _LONG_DOUBLE */
+extern "C" char *_ldecvt(long_double, int, int *, int *);
+extern "C" char *_ldfcvt(long_double, int, int *, int *);
+
+# endif
+#endif /* __hpux */
+
+_STLP_BEGIN_NAMESPACE
+_STLP_MOVE_TO_PRIV_NAMESPACE
+
+#if defined (__MWERKS__) || defined(__BEOS__)
+# define USE_SPRINTF_INSTEAD
+#endif
+
+#if defined (_AIX) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+// Some OS'es only provide non-reentrant primitives, so we have to use additional synchronization here
+
+# if !defined(_REENTRANT) && !defined(_THREAD_SAFE) && !(defined(_POSIX_THREADS) && defined(__OpenBSD__))
+# define LOCK_CVT
+# define RETURN_CVT(ecvt, x, n, pt, sign, buf) return ecvt(x, n, pt, sign);
+# else
+static _STLP_STATIC_MUTEX __put_float_mutex _STLP_MUTEX_INITIALIZER;
+# define LOCK_CVT _STLP_auto_lock lock(__put_float_mutex);
+# define RETURN_CVT(ecvt, x, n, pt, sign, buf) strcpy(buf, ecvt(x, n, pt, sign)); return buf;
+# endif // !_REENTRANT
+#endif // _AIX || __FreeBSD__ || __NetBSD__ || __OpenBSD__
+
+// Tests for infinity and NaN differ on different OSs. We encapsulate
+// these differences here.
+
+#if !defined (USE_SPRINTF_INSTEAD)
+# if defined (__hpux) || defined (__DJGPP) || (defined (_STLP_USE_GLIBC) && ! defined (__MSL__)) || \
+ defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__)
+static inline bool _Stl_is_nan_or_inf(double x)
+# if defined (isfinite)
+{ return !isfinite(x); }
+# else
+{ return !finite(x); }
+# endif
+static inline bool _Stl_is_neg_nan(double x) { return isnan(x) && ( copysign(1., x) < 0 ); }
+static inline bool _Stl_is_inf(double x) { return isinf(x); }
+// inline bool _Stl_is_neg_inf(double x) { return isinf(x) < 0; }
+static inline bool _Stl_is_neg_inf(double x) { return isinf(x) && x < 0; }
+# elif (defined (__unix) || defined (__unix__)) && \
+ !defined (__APPLE__) && !defined (__DJGPP) && !defined(__osf__) && \
+ !defined (_CRAY)
+static inline bool _Stl_is_nan_or_inf(double x) { return IsNANorINF(x); }
+static inline bool _Stl_is_inf(double x) { return IsNANorINF(x) && IsINF(x); }
+static inline bool _Stl_is_neg_inf(double x) { return (IsINF(x)) && (x < 0.0); }
+static inline bool _Stl_is_neg_nan(double x) { return IsNegNAN(x); }
+# elif defined (__BORLANDC__) && ( __BORLANDC__ < 0x540 )
+static inline bool _Stl_is_nan_or_inf(double x) { return !_finite(x); }
+static inline bool _Stl_is_inf(double x) { return _Stl_is_nan_or_inf(x) && ! _isnan(x);}
+static inline bool _Stl_is_neg_inf(double x) { return _Stl_is_inf(x) && x < 0 ; }
+static inline bool _Stl_is_neg_nan(double x) { return _isnan(x) && x < 0 ; }
+# elif defined (_STLP_MSVC_LIB) || defined (__MINGW32__) || defined (__BORLANDC__)
+static inline bool _Stl_is_nan_or_inf(double x) { return !_finite(x); }
+static inline bool _Stl_is_inf(double x) {
+ int fclass = _fpclass(x);
+ return fclass == _FPCLASS_NINF || fclass == _FPCLASS_PINF;
+}
+static inline bool _Stl_is_neg_inf(double x) { return _fpclass(x) == _FPCLASS_NINF; }
+static inline bool _Stl_is_neg_nan(double x) { return _isnan(x) && _copysign(1., x) < 0 ; }
+# elif defined (__MRC__) || defined (__SC__) //*TY 02/24/2000 - added support for MPW
+static bool _Stl_is_nan_or_inf(double x) { return isnan(x) || !isfinite(x); }
+static bool _Stl_is_inf(double x) { return !isfinite(x); }
+static bool _Stl_is_neg_inf(double x) { return !isfinite(x) && signbit(x); }
+static bool _Stl_is_neg_nan(double x) { return isnan(x) && signbit(x); }
+# elif /* defined(__FreeBSD__) || defined(__OpenBSD__) || */ (defined(__GNUC__) && defined(__APPLE__))
+static inline bool _Stl_is_nan_or_inf(double x) { return !finite(x); }
+static inline bool _Stl_is_inf(double x) { return _Stl_is_nan_or_inf(x) && ! isnan(x); }
+static inline bool _Stl_is_neg_inf(double x) { return _Stl_is_inf(x) && x < 0 ; }
+static inline bool _Stl_is_neg_nan(double x) { return isnan(x) && copysign(1., x) < 0 ; }
+# elif defined( _AIX ) // JFA 11-Aug-2000
+static bool _Stl_is_nan_or_inf(double x) { return isnan(x) || !finite(x); }
+static bool _Stl_is_inf(double x) { return !finite(x); }
+// bool _Stl_is_neg_inf(double x) { return _class(x) == FP_MINUS_INF; }
+static bool _Stl_is_neg_inf(double x) { return _Stl_is_inf(x) && ( copysign(1., x) < 0 ); }
+static bool _Stl_is_neg_nan(double x) { return isnan(x) && ( copysign(1., x) < 0 ); }
+# elif defined (__ISCPP__)
+static inline bool _Stl_is_nan_or_inf (double x) { return _fp_isINF(x) || _fp_isNAN(x); }
+static inline bool _Stl_is_inf (double x) { return _fp_isINF(x); }
+static inline bool _Stl_is_neg_inf (double x) { return _fp_isINF(x) && x < 0; }
+static inline bool _Stl_is_neg_nan (double x) { return _fp_isNAN(x) && x < 0; }
+# elif defined (_CRAY)
+# if defined (_CRAYIEEE)
+static inline bool _Stl_is_nan_or_inf(double x) { return isnan(x) || isinf(x); }
+static inline bool _Stl_is_inf(double x) { return isinf(x); }
+static inline bool _Stl_is_neg_inf(double x) { return isinf(x) && signbit(x); }
+static inline bool _Stl_is_neg_nan(double x) { return isnan(x) && signbit(x); }
+# else
+static inline bool _Stl_is_nan_or_inf(double x) { return false; }
+static inline bool _Stl_is_inf(double x) { return false; }
+static inline bool _Stl_is_neg_inf(double x) { return false; }
+static inline bool _Stl_is_neg_nan(double x) { return false; }
+# endif
+# else // nothing from above
+# define USE_SPRINTF_INSTEAD
+# endif
+#endif // !USE_SPRINTF_INSTEAD
+
+#if !defined (USE_SPRINTF_INSTEAD)
+// Reentrant versions of floating-point conversion functions. The argument
+// lists look slightly different on different operating systems, so we're
+// encapsulating the differences here.
+
+# if defined (__CYGWIN__) || defined(__DJGPP)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return ecvtbuf(x, n, pt, sign, buf); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return fcvtbuf(x, n, pt, sign, buf); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return ecvtbuf(x, n, pt, sign, buf); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return fcvtbuf(x, n, pt, sign, buf); }
+# endif
+# elif defined (_STLP_USE_GLIBC)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return buf + ecvt_r(x, n, pt, sign, buf, NDIG+2); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return buf + fcvt_r(x, n, pt, sign, buf, NDIG+2); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return buf + qecvt_r(x, n, pt, sign, buf, NDIG+2); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return buf + qfcvt_r(x, n, pt, sign, buf, NDIG+2); }
+# endif
+# elif defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return ecvt(x, n, pt, sign); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return fcvt(x, n, pt, sign); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return ecvtl(x, n, pt, sign); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return fcvtl(x, n, pt, sign); }
+# endif
+# elif defined (__sun)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return econvert(x, n, pt, sign, buf); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return fconvert(x, n, pt, sign, buf); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return qeconvert(&x, n, pt, sign, buf); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return qfconvert(&x, n, pt, sign, buf); }
+# endif
+# elif defined (__DECCXX)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return (ecvt_r(x, n, pt, sign, buf, NDIG)==0 ? buf : 0); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return (fcvt_r(x, n, pt, sign, buf, NDIG)==0 ? buf : 0); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+// fbp : no "long double" conversions !
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return (ecvt_r((double)x, n, pt, sign, buf, NDIG)==0 ? buf : 0) ; }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return (fcvt_r((double)x, n, pt, sign, buf, NDIG)==0 ? buf : 0); }
+# endif
+# elif defined (__hpux)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return ecvt(x, n, pt, sign); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return fcvt(x, n, pt, sign); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+
+# if defined( _REENTRANT ) && (defined(_PTHREADS_DRAFT4) || defined(PTHREAD_THREADS_MAX))
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return (_ldecvt_r(*(long_double*)&x, n, pt, sign, buf, NDIG+2)==0 ? buf : 0); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return (_ldfcvt_r(*(long_double*)&x, n, pt, sign, buf, NDIG+2)==0 ? buf : 0); }
+# else
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return _ldecvt(*(long_double*)&x, n, pt, sign); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return _ldfcvt(*(long_double*)&x, n, pt, sign); }
+# endif
+# endif
+# elif defined (_AIX) || defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ LOCK_CVT RETURN_CVT(ecvt, x, n, pt, sign, buf) }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ LOCK_CVT RETURN_CVT(fcvt, x, n, pt, sign, buf) }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ LOCK_CVT RETURN_CVT(ecvt, x, n, pt, sign, buf) }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ LOCK_CVT RETURN_CVT(fcvt, x, n, pt, sign, buf) }
+# endif
+# elif defined (__unix) && !defined (__APPLE__) && !defined (_CRAY)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return ecvt_r(x, n, pt, sign, buf); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return fcvt_r(x, n, pt, sign, buf); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return qecvt_r(x, n, pt, sign, buf); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return qfcvt_r(x, n, pt, sign, buf); }
+# endif
+# elif defined (_STLP_MSVC_LIB) || defined (__MINGW32__) || defined (__BORLANDC__)
+// those guys claim _cvt functions being reentrant.
+# if defined (_STLP_USE_SAFE_STRING_FUNCTIONS)
+# define _STLP_APPEND(a, b) a##b
+# define _STLP_BUF_PARAMS , char* buf, size_t bsize
+# define _STLP_SECURE_FUN(F, X, N, PT, SIGN) _STLP_APPEND(F, _s)(buf, bsize, X, N, PT, SIGN); return buf
+# else
+# define _STLP_CVT_DONT_NEED_BUF
+# define _STLP_BUF_PARAMS
+# define _STLP_SECURE_FUN(F, X, N, PT, SIGN) return F(X, N, PT, SIGN)
+# endif
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign _STLP_BUF_PARAMS)
+{ _STLP_SECURE_FUN(_ecvt, x, n, pt, sign); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign _STLP_BUF_PARAMS)
+{ _STLP_SECURE_FUN(_fcvt, x, n, pt, sign); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign _STLP_BUF_PARAMS)
+{ _STLP_SECURE_FUN(_ecvt, (double)x, n, pt, sign); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign _STLP_BUF_PARAMS)
+{ _STLP_SECURE_FUN(_fcvt, (double)x, n, pt, sign); }
+# endif
+# undef _STLP_SECURE_FUN
+# undef _STLP_BUF_PARAMS
+# undef _STLP_APPEND
+# elif defined (__ISCPP__)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return _fp_ecvt( x, n, pt, sign, buf); }
+
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf)
+{ return _fp_fcvt(x, n, pt, sign, buf); }
+
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return _fp_ecvt( x, n, pt, sign, buf); }
+
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* buf)
+{ return _fp_fcvt(x, n, pt, sign, buf); }
+# endif
+# elif defined (__MRC__) || defined (__SC__) || defined (_CRAY)
+static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* )
+{ return ecvt( x, n, pt, sign ); }
+static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* )
+{ return fcvt(x, n, pt, sign); }
+# if !defined (_STLP_NO_LONG_DOUBLE)
+static inline char* _Stl_qecvtR(long double x, int n, int* pt, int* sign, char* )
+{ return ecvt( x, n, pt, sign ); }
+static inline char* _Stl_qfcvtR(long double x, int n, int* pt, int* sign, char* )
+{ return fcvt(x, n, pt, sign); }
+# endif
+# endif
+
+# if defined (_STLP_CVT_DONT_NEED_BUF)
+# define _STLP_CVT_BUFFER(B)
+# elif !defined (_STLP_USE_SAFE_STRING_FUNCTIONS)
+# define _STLP_CVT_BUFFER(B) , B
+# else
+# define _STLP_CVT_BUFFER(B) , _STLP_ARRAY_AND_SIZE(B)
+# endif
+
+# if !defined (_STLP_USE_SAFE_STRING_FUNCTIONS)
+# define _STLP_BUFFER(B) B
+# else
+# define _STLP_BUFFER(B) _STLP_ARRAY_AND_SIZE(B)
+# endif
+
+//----------------------------------------------------------------------
+// num_put
+
+// __format_float formats a mantissa and exponent as returned by
+// one of the conversion functions (ecvt_r, fcvt_r, qecvt_r, qfcvt_r)
+// according to the specified precision and format flags. This is
+// based on doprnt but is much simpler since it is concerned only
+// with floating point input and does not consider all formats. It
+// also does not deal with blank padding, which is handled by
+// __copy_float_and_fill.
+
+static size_t __format_float_scientific( __iostring& buf, const char *bp,
+ int decpt, int sign, bool is_zero,
+ ios_base::fmtflags flags,
+ int precision, bool /* islong */)
+{
+ // sign if required
+ if (sign)
+ buf += '-';
+ else if (flags & ios_base::showpos)
+ buf += '+';
+
+ // first digit of mantissa
+ buf += *bp++;
+
+ // start of grouping position, grouping won't occur in scientific notation
+ // as it is impossible to have something like 1234.0e04 but we return a correct
+ // group position for coherency with __format_float_fixed.
+ size_t __group_pos = buf.size();
+
+ // decimal point if required
+ if (precision != 0 || flags & ios_base::showpoint) {
+ buf += '.';
+ }
+
+ // rest of mantissa
+ int rz = precision;
+ while (rz-- > 0 && *bp != 0)
+ buf += *bp++;
+
+ // exponent
+ char expbuf[MAXESIZ + 2];
+ char *suffix = expbuf + MAXESIZ;
+ *suffix = 0;
+ if (!is_zero) {
+ int nn = decpt - 1;
+ if (nn < 0)
+ nn = -nn;
+ for (; nn > 9; nn /= 10)
+ *--suffix = (char) todigit(nn % 10);
+ *--suffix = (char) todigit(nn);
+ }
+
+ // prepend leading zeros to exponent
+ while (suffix > &expbuf[MAXESIZ - 2])
+ *--suffix = '0';
+
+ // put in the exponent sign
+ *--suffix = (char) ((decpt > 0 || is_zero ) ? '+' : '-');
+
+ // put in the e
+ *--suffix = flags & ios_base::uppercase ? 'E' : 'e';
+
+ // copy the suffix
+ buf += suffix;
+ return __group_pos;
+}
+
+static size_t __format_float_fixed( __iostring &buf, const char *bp,
+ int decpt, int sign, bool /* x */,
+ ios_base::fmtflags flags,
+ int precision, bool islong )
+{
+ if ( sign && (decpt > -precision) && (*bp != 0) )
+ buf += '-';
+ else if ( flags & ios_base::showpos )
+ buf += '+';
+
+ int k = 0;
+ int maxfsig = islong ? 2*MAXFSIG : MAXFSIG;
+
+ // digits before decimal point
+ int nnn = decpt;
+ do {
+ buf += ((nnn <= 0 || *bp == 0 || k >= maxfsig) ? '0' : (++k, *bp++));
+ } while ( --nnn > 0 );
+
+ // start of grouping position
+ size_t __group_pos = buf.size();
+
+ // decimal point if needed
+ if ( flags & ios_base::showpoint || precision > 0 ) {
+ buf += '.';
+ }
+
+ // digits after decimal point if any
+ nnn = (min) (precision, MAXFCVT);
+
+ while ( --nnn >= 0 ) {
+ buf += (++decpt <= 0 || *bp == 0 || k >= maxfsig) ? '0' : (++k, *bp++);
+ }
+
+ // trailing zeros if needed
+ if ( precision > MAXFCVT ) {
+ buf.append( precision - MAXFCVT, '0' );
+ }
+
+ return __group_pos;
+}
+
+static void __format_nan_or_inf(__iostring& buf, double x, ios_base::fmtflags flags)
+{
+ static const char* inf[2] = { "inf", "Inf" };
+ static const char* nan[2] = { "nan", "NaN" };
+ const char** inf_or_nan;
+ if (_Stl_is_inf(x)) { // Infinity
+ inf_or_nan = inf;
+ if (_Stl_is_neg_inf(x))
+ buf += '-';
+ else if (flags & ios_base::showpos)
+ buf += '+';
+ } else { // NaN
+ inf_or_nan = nan;
+ if (_Stl_is_neg_nan(x))
+ buf += '-';
+ else if (flags & ios_base::showpos)
+ buf += '+';
+ }
+ buf += inf_or_nan[flags & ios_base::uppercase ? 1 : 0];
+}
+
+template <class max_double_type>
+static inline size_t __format_float( __iostring &buf, const char * bp,
+ int decpt, int sign, max_double_type x,
+ ios_base::fmtflags flags,
+ int precision, bool islong)
+{
+ size_t __group_pos = 0;
+ // Output of infinities and NANs does not depend on the format flags
+ if (_Stl_is_nan_or_inf((double)x)) { // Infinity or NaN
+ __format_nan_or_inf(buf, (double)x, flags);
+ } else { // representable number
+ switch (flags & ios_base::floatfield) {
+ case ios_base::scientific:
+ __group_pos = __format_float_scientific( buf, bp, decpt, sign, x == 0.0,
+ flags, precision, islong);
+ break;
+ case ios_base::fixed:
+ __group_pos = __format_float_fixed( buf, bp, decpt, sign, true,
+ flags, precision, islong);
+ break;
+ default: // g format
+ // establish default precision
+ if (flags & ios_base::showpoint || precision > 0) {
+ if (precision == 0) precision = 1;
+ } else
+ precision = 6;
+
+ // reset exponent if value is zero
+ if (x == 0)
+ decpt = 1;
+
+ int kk = precision;
+ if (!(flags & ios_base::showpoint)) {
+ size_t n = strlen(bp);
+ if (n < (size_t)kk)
+ kk = (int)n;
+ while (kk >= 1 && bp[kk-1] == '0')
+ --kk;
+ }
+
+ if (decpt < -3 || decpt > precision) {
+ precision = kk - 1;
+ __group_pos = __format_float_scientific( buf, bp, decpt, sign, x == 0,
+ flags, precision, islong);
+ } else {
+ precision = kk - decpt;
+ __group_pos = __format_float_fixed( buf, bp, decpt, sign, true,
+ flags, precision, islong);
+ }
+ break;
+ } /* switch */
+ } /* else is_nan_or_inf */
+ return __group_pos;
+}
+
+#else /* USE_SPRINTF_INSTEAD */
+
+struct GroupPos {
+ bool operator () (char __c) const {
+ return __c == '.' ||
+ __c == 'e' || __c == 'E';
+ }
+};
+
+// Creates a format string for sprintf()
+static int __fill_fmtbuf(char* fmtbuf, ios_base::fmtflags flags, char long_modifier) {
+ fmtbuf[0] = '%';
+ int i = 1;
+
+ if (flags & ios_base::showpos)
+ fmtbuf[i++] = '+';
+
+ if (flags & ios_base::showpoint)
+ fmtbuf[i++] = '#';
+
+ fmtbuf[i++] = '.';
+ fmtbuf[i++] = '*';
+
+ if (long_modifier)
+ fmtbuf[i++] = long_modifier;
+
+ switch (flags & ios_base::floatfield)
+ {
+ case ios_base::scientific:
+ fmtbuf[i++] = (flags & ios_base::uppercase) ? 'E' : 'e';
+ break;
+ case ios_base::fixed:
+# if defined (__FreeBSD__)
+ fmtbuf[i++] = 'f';
+# else
+ fmtbuf[i++] = (flags & ios_base::uppercase) ? 'F' : 'f';
+# endif
+ break;
+ default:
+ fmtbuf[i++] = (flags & ios_base::uppercase) ? 'G' : 'g';
+ break;
+ }
+
+ fmtbuf[i] = 0;
+ return i;
+}
+
+#endif /* USE_SPRINTF_INSTEAD */
+
+size_t _STLP_CALL
+__write_float(__iostring &buf, ios_base::fmtflags flags, int precision,
+ double x) {
+#if defined (USE_SPRINTF_INSTEAD)
+ /* If we want 'abitrary' precision, we should use 'abitrary' buffer size
+ * below. - ptr
+ */
+ char static_buf[128];
+ // char *static_buf = new char [128+precision];
+ char fmtbuf[32];
+ __fill_fmtbuf(fmtbuf, flags, 0);
+ // snprintf(static_buf, 128+precision, fmtbuf, precision, x);
+# if !defined (N_PLAT_NLM)
+ snprintf(_STLP_ARRAY_AND_SIZE(static_buf), fmtbuf, precision, x);
+# else
+ sprintf(static_buf, fmtbuf, precision, x);
+# endif
+ buf = static_buf;
+ // delete [] static_buf;
+ return find_if(buf.begin(), buf.end(), GroupPos()) - buf.begin();
+#else
+# if !defined (_STLP_CVT_DONT_NEED_BUF)
+ char cvtbuf[NDIG + 2];
+# endif
+ char * bp;
+ int decpt, sign;
+
+ switch (flags & ios_base::floatfield) {
+ case ios_base::fixed:
+ bp = _Stl_fcvtR(x, (min) (precision, MAXFCVT), &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+ break;
+ case ios_base::scientific :
+ bp = _Stl_ecvtR(x, (min) (precision + 1, MAXECVT), &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+ break;
+ default :
+ bp = _Stl_ecvtR(x, (min) (precision, MAXECVT), &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+ break;
+ }
+ return __format_float(buf, bp, decpt, sign, x, flags, precision, false);
+#endif
+}
+
+#if !defined (_STLP_NO_LONG_DOUBLE)
+size_t _STLP_CALL
+__write_float(__iostring &buf, ios_base::fmtflags flags, int precision,
+ long double x) {
+# if defined (USE_SPRINTF_INSTEAD)
+ /* If we want 'abitrary' precision, we should use 'abitrary' buffer size
+ * below. - ptr
+ */
+ char static_buf[128];
+ // char *static_buf = new char [128+precision];
+ char fmtbuf[64];
+ int i = __fill_fmtbuf(fmtbuf, flags, 'L');
+ // snprintf(static_buf, 128+precision, fmtbuf, precision, x);
+# if !defined (N_PLAT_NLM)
+ snprintf(_STLP_ARRAY_AND_SIZE(static_buf), fmtbuf, precision, x);
+# else
+ sprintf(static_buf, fmtbuf, precision, x);
+# endif
+ // we should be able to return buf + sprintf(), but we do not trust'em...
+ buf = static_buf;
+ // delete [] static_buf;
+ return find_if(buf.begin(), buf.end(), GroupPos()) - buf.begin();
+# else
+# if !defined (_STLP_CVT_DONT_NEED_BUF)
+ char cvtbuf[NDIG + 2];
+# endif
+ char * bp;
+ int decpt, sign;
+
+ switch (flags & ios_base::floatfield) {
+ case ios_base::fixed:
+ bp = _Stl_qfcvtR(x, (min) (precision, MAXFCVT), &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+ break;
+ case ios_base::scientific:
+ bp = _Stl_qecvtR(x, (min) (precision + 1, MAXECVT), &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+ break;
+ default :
+ bp = _Stl_qecvtR(x, (min) (precision, MAXECVT), &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+ break;
+ }
+ return __format_float(buf, bp, decpt, sign, x, flags, precision, true);
+# endif /* USE_SPRINTF_INSTEAD */
+}
+#endif /* _STLP_NO_LONG_DOUBLE */
+
+void _STLP_CALL __get_floor_digits(__iostring &out, _STLP_LONGEST_FLOAT_TYPE __x) {
+#if defined (USE_SPRINTF_INSTEAD)
+ char cvtbuf[128];
+# if !defined (_STLP_NO_LONG_DOUBLE)
+# if !defined (N_PLAT_NLM)
+ snprintf(_STLP_ARRAY_AND_SIZE(cvtbuf), "%Lf", __x); // check for 1234.56!
+# else
+ sprintf(cvtbuf, "%Lf", __x); // check for 1234.56!
+# endif
+# else
+ snprintf(_STLP_ARRAY_AND_SIZE(cvtbuf), "%f", __x); // check for 1234.56!
+# endif
+ char *p = strchr( cvtbuf, '.' );
+ if ( p == 0 ) {
+ out.append( cvtbuf );
+ } else {
+ out.append( cvtbuf, p );
+ }
+#else
+# if !defined (_STLP_CVT_DONT_NEED_BUF)
+ char cvtbuf[NDIG + 2];
+# endif
+ char * bp;
+ int decpt, sign;
+# if !defined (_STLP_NO_LONG_DOUBLE)
+ bp = _Stl_qfcvtR(__x, 0, &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+# else
+ bp = _Stl_fcvtR(__x, 0, &decpt, &sign _STLP_CVT_BUFFER(cvtbuf));
+# endif
+
+ if (sign) {
+ out += '-';
+ }
+ out.append(bp, bp + decpt);
+#endif // USE_PRINTF_INSTEAD
+}
+
+
+#if !defined (_STLP_NO_WCHAR_T)
+void _STLP_CALL __convert_float_buffer( __iostring const& str, __iowstring &out,
+ const ctype<wchar_t>& ct, wchar_t dot, bool __check_dot)
+{
+ string::const_iterator str_ite(str.begin()), str_end(str.end());
+
+ //First loop, check the dot char
+ if (__check_dot) {
+ while (str_ite != str_end) {
+ if (*str_ite != '.') {
+ out += ct.widen(*str_ite++);
+ } else {
+ out += dot;
+ break;
+ }
+ }
+ } else {
+ if (str_ite != str_end) {
+ out += ct.widen(*str_ite);
+ }
+ }
+
+ if (str_ite != str_end) {
+ //Second loop, dot has been found, no check anymore
+ while (++str_ite != str_end) {
+ out += ct.widen(*str_ite);
+ }
+ }
+}
+
+#endif
+
+void _STLP_CALL
+__adjust_float_buffer(__iostring &str, char dot) {
+ if ('.' != dot) {
+ size_t __dot_pos = str.find('.');
+ if (__dot_pos != string::npos) {
+ str[__dot_pos] = dot;
+ }
+ }
+}
+
+_STLP_MOVE_TO_STD_NAMESPACE
+_STLP_END_NAMESPACE
+
+// Local Variables:
+// mode:C++
+// End:
projects / polintos / scott / priv.git / blobdiff