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iostream.cfa@ f54e6ec

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Last change on this file since f54e6ec was 0f107e4, checked in by Peter A. Buhr <pabuhr@…>, 2 years ago
add reading fixed strings, seperate skip input manipulator, getline checks for delimiter
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File size: 37.5 KB

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1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// iostream.cfa --
8	//
9	// Author : Peter A. Buhr
10	// Created On : Wed May 27 17:56:53 2015
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Sat Sep 2 14:42:01 2023
13	// Update Count : 1561
14	//
15
16	#include "iostream.hfa"
17
18	#include <stdio.h>
19	#include <stdbool.h> // true/false
20	#include <stdint.h> // UINT64_MAX
21	#include <float.h> // DBL_DIG, LDBL_DIG
22	#include <complex.h> // creal, cimag
23	//#include <stdio.h>
24
25	extern "C" {
26	extern size_t strlen (const char *__s) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
27	extern int strcmp (const char __s1, const char __s2) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
28	extern char strcpy (char __restrict __dest, const char *__restrict __src) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1, 2)));
29	extern void memcpy (void __restrict __dest, const void *__restrict __src, size_t __n) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1, 2)));
30	} // extern "C"
31
32	#include "math.hfa" // isfinite, floor, ceiling_div
33	#include "bitmanip.hfa" // high1
34
35	#pragma GCC visibility push(default)
36
37
38	// ********************************* ostream *********************************
39
40
41	forall( ostype & \| basic_ostream( ostype ) ) {
42	ostype & ?\|?( ostype & os, bool b ) {
43	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
44	fmt( os, "%s", b ? "true" : "false" );
45	return os;
46	} // ?\|?
47	OSTYPE_VOID_IMPL( bool )
48
49	ostype & ?\|?( ostype & os, char c ) {
50	fmt( os, "%c", c );
51	if ( c == '\n' ) setNL$( os, true );
52	return nosep( os );
53	} // ?\|?
54	OSTYPE_VOID_IMPL( char )
55
56	ostype & ?\|?( ostype & os, signed char sc ) {
57	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
58	fmt( os, "%'hhd", sc );
59	return os;
60	} // ?\|?
61	OSTYPE_VOID_IMPL( signed char )
62
63	ostype & ?\|?( ostype & os, unsigned char usc ) {
64	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
65	fmt( os, "%'hhu", usc );
66	return os;
67	} // ?\|?
68	OSTYPE_VOID_IMPL( unsigned char )
69
70	ostype & ?\|?( ostype & os, short int si ) {
71	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
72	fmt( os, "%'hd", si );
73	return os;
74	} // ?\|?
75	OSTYPE_VOID_IMPL( short int )
76
77	ostype & ?\|?( ostype & os, unsigned short int usi ) {
78	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
79	fmt( os, "%'hu", usi );
80	return os;
81	} // ?\|?
82	OSTYPE_VOID_IMPL( unsigned short int )
83
84	ostype & ?\|?( ostype & os, int i ) {
85	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
86	fmt( os, "%'d", i );
87	return os;
88	} // ?\|?
89	OSTYPE_VOID_IMPL( int )
90
91	ostype & ?\|?( ostype & os, unsigned int ui ) {
92	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
93	fmt( os, "%'u", ui );
94	return os;
95	} // ?\|?
96	OSTYPE_VOID_IMPL( unsigned int )
97
98	ostype & ?\|?( ostype & os, long int li ) {
99	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
100	fmt( os, "%'ld", li );
101	return os;
102	} // ?\|?
103	OSTYPE_VOID_IMPL( long int )
104
105	ostype & ?\|?( ostype & os, unsigned long int uli ) {
106	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
107	fmt( os, "%'lu", uli );
108	return os;
109	} // ?\|?
110	OSTYPE_VOID_IMPL( unsigned long int )
111
112	ostype & ?\|?( ostype & os, long long int lli ) {
113	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
114	fmt( os, "%'lld", lli );
115	return os;
116	} // ?\|?
117	OSTYPE_VOID_IMPL( long long int )
118
119	ostype & ?\|?( ostype & os, unsigned long long int ulli ) {
120	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
121	fmt( os, "%'llu", ulli );
122	return os;
123	} // ?\|?
124	OSTYPE_VOID_IMPL( unsigned long long int )
125
126	#if defined( __SIZEOF_INT128__ )
127	// UINT64_MAX 18_446_744_073_709_551_615_ULL
128	#define P10_UINT64 10_000_000_000_000_000_000_ULL // 19 zeroes
129
130	static inline void base10_128( ostype & os, unsigned int128 val ) {
131	#if defined(__GNUC__) && __GNUC_PREREQ(7,0) // gcc version >= 7
132	if ( val > P10_UINT64 ) {
133	#else
134	if ( (uint64_t)(val >> 64) != 0 \|\| (uint64_t)val > P10_UINT64 ) { // patch gcc 5 & 6 -O3 bug
135	#endif // __GNUC_PREREQ(7,0)
136	base10_128( os, val / P10_UINT64 ); // recursive
137	fmt( os, "%.19lu", (uint64_t)(val % P10_UINT64) );
138	} else {
139	fmt( os, "%lu", (uint64_t)val );
140	} // if
141	} // base10_128
142
143	static inline void base10_128( ostype & os, int128 val ) {
144	if ( val < 0 ) {
145	fmt( os, "-" ); // leading negative sign
146	val = -val;
147	} // if
148	base10_128( os, (unsigned int128)val ); // print zero/positive value
149	} // base10_128
150
151	ostype & ?\|?( ostype & os, int128 llli ) {
152	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
153	base10_128( os, llli );
154	return os;
155	} // ?\|?
156	OSTYPE_VOID_IMPL( int128 )
157
158	ostype & ?\|?( ostype & os, unsigned int128 ullli ) {
159	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
160	base10_128( os, ullli );
161	return os;
162	} // ?\|?
163	OSTYPE_VOID_IMPL( unsigned int128 )
164	#endif // __SIZEOF_INT128__
165
166	#define PRINT_WITH_DP( os, format, val, ... ) \
167	{ \
168	enum { size = 48 }; \
169	char buf[size]; \
170	int len = snprintf( buf, size, format, ##__VA_ARGS__, val ); \
171	fmt( os, "%s", buf ); \
172	if ( isfinite( val ) ) { /* if number, print decimal point when no fraction or exponent */ \
173	for ( i; 0 ~ @ ) { \
174	if ( i == len ) { fmt( os, "." ); break; } \
175	if ( buf[i] == '.' \|\| buf[i] == 'e' \|\| buf[i] == 'E' \|\| \
176	buf[i] == 'p' \|\| buf[i] == 'P' ) break; /* decimal point or scientific ? */ \
177	} /* for */ \
178	} /* if */ \
179	}
180
181	ostype & ?\|?( ostype & os, float f ) {
182	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
183	PRINT_WITH_DP( os, "%'g", f );
184	return os;
185	} // ?\|?
186	OSTYPE_VOID_IMPL( float )
187
188	ostype & ?\|?( ostype & os, double d ) {
189	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
190	PRINT_WITH_DP( os, "%'.*lg", d, DBL_DIG );
191	return os;
192	} // ?\|?
193	OSTYPE_VOID_IMPL( double )
194
195	ostype & ?\|?( ostype & os, long double ld ) {
196	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
197	PRINT_WITH_DP( os, "%'.*Lg", ld, LDBL_DIG );
198	return os;
199	} // ?\|?
200	OSTYPE_VOID_IMPL( long double )
201
202	ostype & ?\|?( ostype & os, float _Complex fc ) {
203	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
204	// os \| crealf( fc ) \| nonl;
205	PRINT_WITH_DP( os, "%'g", crealf( fc ) );
206	PRINT_WITH_DP( os, "%'+g", cimagf( fc ) );
207	fmt( os, "i" );
208	return os;
209	} // ?\|?
210	OSTYPE_VOID_IMPL( float _Complex )
211
212	ostype & ?\|?( ostype & os, double _Complex dc ) {
213	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
214	// os \| creal( dc ) \| nonl;
215	PRINT_WITH_DP( os, "%'.*lg", creal( dc ), DBL_DIG );
216	PRINT_WITH_DP( os, "%'+.*lg", cimag( dc ), DBL_DIG );
217	fmt( os, "i" );
218	return os;
219	} // ?\|?
220	OSTYPE_VOID_IMPL( double _Complex )
221
222	ostype & ?\|?( ostype & os, long double _Complex ldc ) {
223	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
224	// os \| creall( ldc ) \|\| nonl;
225	PRINT_WITH_DP( os, "%'.*Lg", creall( ldc ), LDBL_DIG );
226	PRINT_WITH_DP( os, "%'+.*Lg", cimagl( ldc ), LDBL_DIG );
227	fmt( os, "i" );
228	return os;
229	} // ?\|?
230	OSTYPE_VOID_IMPL( long double _Complex )
231
232	ostype & ?\|?( ostype & os, const char s[] ) {
233	enum { Open = 1, Close, OpenClose };
234	static const unsigned char mask[256] @= { // 256 covers all Latin-1 characters
235	// opening delimiters, no space after
236	['('] : Open, ['['] : Open, ['{'] : Open,
237	['='] : Open, ['$'] : Open, [(unsigned char)'£'] : Open, [(unsigned char)'¥'] : Open,
238	[(unsigned char)'¡'] : Open, [(unsigned char)'¿'] : Open, [(unsigned char)'«'] : Open,
239	// closing delimiters, no space before
240	[','] : Close, ['.'] : Close, [';'] : Close, ['!'] : Close, ['?'] : Close,
241	['%'] : Close, [(unsigned char)'¢'] : Close, [(unsigned char)'»'] : Close,
242	[')'] : Close, [']'] : Close, ['}'] : Close,
243	// opening-closing delimiters, no space before or after
244	['\''] : OpenClose, ['`'] : OpenClose, ['"'] : OpenClose, [':'] : OpenClose,
245	[' '] : OpenClose, ['\f'] : OpenClose, ['\n'] : OpenClose, ['\r'] : OpenClose, ['\t'] : OpenClose, ['\v'] : OpenClose, // isspace
246	}; // mask
247
248	if ( s == 0p ) { fmt( os, "%s", "0p" ); return os; } // null pointer
249	if ( s[0] == '\0' ) { nosep( os ); return os; } // null string => no leading/trailing separator
250
251	// first character IS NOT spacing or closing punctuation => add left separator
252	unsigned char ch = s[0]; // must make unsigned
253	if ( sepPrt$( os ) && mask[ ch ] != Close && mask[ ch ] != OpenClose ) {
254	fmt( os, "%s", sepGetCur$( os ) );
255	} // if
256
257	// if string starts line, must reset to determine open state because separator is off
258	sepReset$( os ); // reset separator
259
260	// last character IS spacing or opening punctuation => turn off separator for next item
261	int len = strlen( s );
262	ch = s[len - 1]; // must make unsigned
263	fmt( os, "%s", s ); // fmt resets seperator, but reset it again
264	if ( sepPrt$( os ) && mask[ ch ] != Open && mask[ ch ] != OpenClose ) {
265	sep( os );
266	} else {
267	nosep( os );
268	} // if
269	if ( ch == '\n' ) setNL$( os, true ); // check AFTER sepPrt$ call above as it resets NL flag
270	return os;
271	// return write( os, s, len );
272	} // ?\|?
273	OSTYPE_VOID_IMPL( const char * )
274
275	// ostype & ?\|?( ostype & os, const char16_t s[] ) {
276	// if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
277	// fmt( os, "%ls", s );
278	// return os;
279	// } // ?\|?
280
281	// #if ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 ) // char32_t == wchar_t => ambiguous
282	// ostype & ?\|?( ostype & os, const char32_t s[] ) {
283	// if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
284	// fmt( os, "%ls", s );
285	// return os;
286	// } // ?\|?
287	// #endif // ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 )
288
289	// ostype & ?\|?( ostype & os, const wchar_t s[] ) {
290	// if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
291	// fmt( os, "%ls", s );
292	// return os;
293	// } // ?\|?
294
295	ostype & ?\|?( ostype & os, const void * p ) {
296	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
297	fmt( os, "%p", p );
298	return os;
299	} // ?\|?
300	OSTYPE_VOID_IMPL( const void * )
301
302	// manipulators
303	ostype & ?\|?( ostype & os, ostype & (* manip)( ostype & ) ) {
304	return manip( os );
305	} // ?\|?
306	void ?\|?( ostype & os, ostype & (* manip)( ostype & ) ) {
307	manip( os );
308	if ( getPrt$( os ) ) ends( os ); // something printed ?
309	setPrt$( os, false ); // turn off
310	} // ?\|?
311
312	ostype & nl( ostype & os ) {
313	(ostype &)(os \| '\n');
314	setPrt$( os, false ); // turn off
315	setNL$( os, true );
316	return nosep( os ); // prepare for next line
317	} // nl
318
319	ostype & nonl( ostype & os ) {
320	setPrt$( os, false ); // turn off
321	return os;
322	} // nonl
323
324	ostype & nlOn( ostype & os ) {
325	nlOn( os ); // call void returning
326	return os;
327	} // nlOn
328
329	ostype & nlOff( ostype & os ) {
330	nlOff( os ); // call void returning
331	return os;
332	} // nlOff
333
334	ostype & sepVal( ostype & os ) {
335	return (ostype &)(os \| sepGet( os ));
336	} // sepVal
337
338	ostype & sepTupleVal( ostype & os ) {
339	return os \| sepGetTuple( os );
340	} // sepTupleVal
341
342	ostype & sep( ostype & os ) {
343	sep( os ); // call void returning
344	return os;
345	} // sep
346
347	ostype & nosep( ostype & os ) {
348	nosep( os ); // call void returning
349	return os;
350	} // nosep
351
352	ostype & sepOn( ostype & os ) {
353	sepOn( os ); // call void returning
354	return os;
355	} // sepOn
356
357	ostype & sepOff( ostype & os ) {
358	sepOff( os ); // call void returning
359	return os;
360	} // sepOff
361	} // distribution
362
363	// tuples
364	forall( ostype &, T, Params... \| writeable( T, ostype ) \| { ostype & ?\|?( ostype &, Params ); } ) {
365	ostype & ?\|?( ostype & os, T arg, Params rest ) {
366	(ostype &)(os \| arg); // print first argument
367	sepSetCur$( os, sepGetTuple( os ) ); // switch to tuple separator
368	(ostype &)(os \| rest); // print remaining arguments
369	sepSetCur$( os, sepGet( os ) ); // switch to regular separator
370	return os;
371	} // ?\|?
372	void ?\|?( ostype & os, T arg, Params rest ) {
373	// (ostype &)(?\|?( os, arg, rest )); ends( os );
374	(ostype &)(os \| arg); // print first argument
375	sepSetCur$( os, sepGetTuple( os ) ); // switch to tuple separator
376	(ostype &)(os \| rest); // print remaining arguments
377	sepSetCur$( os, sepGet( os ) ); // switch to regular separator
378	ends( os );
379	} // ?\|?
380	} // distribution
381
382	// writes the range [begin, end) to the given stream
383	forall( ostype &, elt_type \| writeable( elt_type, ostype ), iterator_type \| iterator( iterator_type, elt_type ) ) {
384	void write( iterator_type begin, iterator_type end, ostype & os ) {
385	void print( elt_type i ) { os \| i; }
386	for_each( begin, end, print );
387	} // ?\|?
388
389	void write_reverse( iterator_type begin, iterator_type end, ostype & os ) {
390	void print( elt_type i ) { os \| i; }
391	for_each_reverse( begin, end, print );
392	} // ?\|?
393	} // distribution
394
395	// ********************************* manipulators *********************************
396
397	// ********************************* integral *********************************
398
399	static const char * shortbin[] = { "0", "1", "10", "11", "100", "101", "110", "111", "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111" };
400	static const char * longbin[] = { "0000", "0001", "0010", "0011", "0100", "0101", "0110", "0111", "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111" };
401
402	// Default prefix for non-decimal prints is 0b, 0, 0x.
403	#define INTEGRAL_FMT_IMPL( T, IFMTNP, IFMTP ) \
404	forall( ostype & \| basic_ostream( ostype ) ) { \
405	ostype & ?\|?( ostype & os, _Ostream_Manip(T) f ) { \
406	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) ); \
407	\
408	if ( f.base == 'b' \|\| f.base == 'B' ) { /* bespoke binary format */ \
409	int bits = high1( f.val ); /* position of most significant bit */ \
410	if ( bits == 0 ) bits = 1; /* 0 value => force one bit to print */ \
411	int spaces; \
412	if ( ! f.flags.left ) { /* right justified ? */ \
413	/* Note, base prefix then zero padding or spacing then prefix. */ \
414	if ( f.flags.pc ) { \
415	spaces = f.wd - f.pc; \
416	if ( ! f.flags.nobsdp ) { spaces -= 2; } /* base prefix takes space */ \
417	if ( spaces > 0 ) fmt( os, "%s", spaces, " " ); / space pad */ \
418	if ( ! f.flags.nobsdp ) { fmt( os, "0%c", f.base ); } \
419	spaces = f.pc - bits; \
420	if ( spaces > 0 ) fmt( os, "%0d", spaces, 0 ); / zero pad */ \
421	} else { \
422	spaces = f.wd - bits; \
423	if ( ! f.flags.nobsdp ) { spaces -= 2; } /* base prefix takes space */ \
424	if ( f.flags.pad0 ) { \
425	if ( ! f.flags.nobsdp ) { fmt( os, "0%c", f.base ); } \
426	if ( spaces > 0 ) fmt( os, "%0d", spaces, 0 ); / zero pad */ \
427	} else { \
428	if ( spaces > 0 ) fmt( os, "%s", spaces, " " ); / space pad */ \
429	if ( ! f.flags.nobsdp ) { fmt( os, "0%c", f.base ); } \
430	} /* if */ \
431	} /* if */ \
432	} else { \
433	if ( ! f.flags.nobsdp ) fmt( os, "0%c", f.base ); \
434	if ( f.flags.pc ) { \
435	spaces = f.pc - bits; \
436	if ( spaces > 0 ) fmt( os, "%0d", spaces, 0 ); / zero pad */ \
437	spaces = f.wd - f.pc; \
438	} else { /* pad0 flag ignored with left flag */ \
439	spaces = f.wd - bits; \
440	} /* if */ \
441	if ( ! f.flags.nobsdp ) { spaces -= 2; } /* base prefix takes space */ \
442	} /* if */ \
443	int shift = floor( bits - 1, 4 ); \
444	typeof( f.val ) temp = f.val; \
445	fmt( os, "%s", shortbin[(temp >> shift) & 0xf] ); \
446	for () { \
447	shift -= 4; \
448	if ( shift < 0 ) break; \
449	temp = f.val; \
450	fmt( os, "%s", longbin[(temp >> shift) & 0xf] ); \
451	} /* for */ \
452	if ( f.flags.left && spaces > 0 ) fmt( os, "%*s", spaces, " " ); \
453	return os; \
454	} /* if */ \
455	\
456	char fmtstr[sizeof(IFMTP)]; /* sizeof includes '\0' */ \
457	if ( ! f.flags.pc ) memcpy( &fmtstr, IFMTNP, sizeof(IFMTNP) ); \
458	else memcpy( &fmtstr, IFMTP, sizeof(IFMTP) ); \
459	int star = 5; /* position before first '' / \
460	\
461	/* Insert flags into spaces before '', from right to left. / \
462	if ( ! f.flags.nobsdp ) { fmtstr[star] = '#'; star -= 1; } \
463	if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; } \
464	if ( f.flags.sign ) { fmtstr[star] = '+'; star -= 1; } \
465	if ( f.flags.pad0 && ! f.flags.pc ) { fmtstr[star] = '0'; star -= 1; } \
466	fmtstr[star] = '\''; star -= 1; /* locale */ \
467	fmtstr[star] = '%'; \
468	\
469	/* Special case printing 0 in hexadecimal as printf does not put the base. */ \
470	if ( (f.base == 'x' \| f.base == 'X') && ! f.flags.nobsdp && f.val == 0 ) { \
471	fmt( os, f.base == 'x' ? "0x" : "0X" ); \
472	f.wd -= 2; \
473	if ( f.wd < 0 ) f.wd = 1; \
474	} /* if */ \
475	\
476	if ( ! f.flags.pc ) { /* no precision */ \
477	fmtstr[sizeof(IFMTNP)-2] = f.base; /* sizeof includes '\0' */ \
478	/* printf( "%s %c\n", &fmtstr[star], f.base ); */ \
479	fmt( os, &fmtstr[star], f.wd, f.val ); \
480	} else { /* precision */ \
481	fmtstr[sizeof(IFMTP)-2] = f.base; /* sizeof includes '\0' */ \
482	/* printf( "%s %c\n", &fmtstr[star], f.base ); */ \
483	fmt( os, &fmtstr[star], f.wd, f.pc, f.val ); \
484	} /* if */ \
485	return os; \
486	} /* ?\|? */ \
487	OSTYPE_VOID_IMPL( _Ostream_Manip(T) ) \
488	} // distribution
489
490	INTEGRAL_FMT_IMPL( signed char, " hh ", " .*hh " )
491	INTEGRAL_FMT_IMPL( unsigned char, " hh ", " .*hh " )
492	INTEGRAL_FMT_IMPL( signed short int, " h ", " .*h " )
493	INTEGRAL_FMT_IMPL( unsigned short int, " h ", " .*h " )
494	INTEGRAL_FMT_IMPL( signed int, " * ", " . " )
495	INTEGRAL_FMT_IMPL( unsigned int, " * ", " . " )
496	INTEGRAL_FMT_IMPL( signed long int, " l ", " .*l " )
497	INTEGRAL_FMT_IMPL( unsigned long int, " l ", " .*l " )
498	INTEGRAL_FMT_IMPL( signed long long int, " ll ", " .*ll " )
499	INTEGRAL_FMT_IMPL( unsigned long long int, " ll ", " .*ll " )
500
501
502	#if defined( __SIZEOF_INT128__ )
503	// Default prefix for non-decimal prints is 0b, 0, 0x.
504	forall( ostype & \| basic_ostream( ostype ) )
505	static inline void base_128( ostype & os, unsigned int128 val, unsigned int128 power, _Ostream_Manip(uint64_t) & f, unsigned int maxdig, unsigned int bits, unsigned int cnt = 0 ) {
506	int wd = 1; // f.wd is never 0 because 0 implies left-pad
507	if ( val > power ) { // subdivide value into printable 64-bit values
508	base_128( os, val / power, power, f, maxdig, bits, cnt + 1 ); // recursive
509	f.val = val % power;
510	if ( cnt == 1 && f.flags.left ) { wd = f.wd; f.wd = maxdig; } // copy f.wd and reset for printing middle chunk
511	// printf( "R val:%#lx(%lu) wd:%u pc:%u base:%c neg:%d pc:%d left:%d nobsdp:%d sign:%d pad0:%d\n",
512	// f.val, f.val, f.wd, f.pc, f.base, f.flags.neg, f.flags.pc, f.flags.left, f.flags.nobsdp, f.flags.sign, f.flags.pad0 );
513	(ostype &)(os \| f);
514	if ( cnt == 1 ) {
515	if ( f.flags.left ) { wd -= maxdig; f.wd = wd < 0 ? 1 : wd; } // update and restore f.wd for printing end chunk
516	nosep( os ); // no seperator between chunks
517	} // if
518	} else { // print start chunk
519	f.val = val;
520	// f.pc is unsigned => use wd
521	if ( f.flags.pc && f.pc > maxdig * cnt ) { wd = f.pc - maxdig * cnt; f.pc = wd < 0 ? 0 : wd; }
522	else { f.flags.pc = false; f.pc = 0; }
523
524	if ( ! f.flags.left ) { // right justify
525	wd = f.wd - maxdig * cnt;
526	f.wd = wd < 0 ? 1 : wd;
527	wd = maxdig;
528	} else { // left justify
529	if ( cnt != 0 ) { // value >= 2^64 ?
530	unsigned int dig, bs = 0;
531	// compute size of prefix digits and base
532	if ( f.base == 'd' \|\| f.base == 'u' ) { // no base prefix
533	dig = ceil( log10( f.val ) ); // use floating-point
534	if ( f.base == 'd' && (f.flags.neg \|\| f.flags.sign) ) bs = 1; // sign ?
535	} else {
536	dig = ceiling_div( high1( f.val ), bits );
537	if ( ! f.flags.nobsdp ) { // base prefix ?
538	if ( f.base == 'o' ) {
539	// 0 prefix for octal is not added for precision with leading zero
540	if ( f.pc <= dig ) bs = 1; // 1 character prefix
541	} else bs = 2; // 2 character prefix
542	} // if
543	} // if
544	wd = f.wd - (f.pc > dig ? f.pc : dig) - bs; // precision > leading digits ?
545	if ( wd < 0 ) wd = 1;
546	f.wd = 1;
547	} // if
548	// all manipulators handled implicitly for value < 2^64
549	} // if
550	// prior checks ensure wd not negative
551
552	if ( f.flags.neg ) f.val = -f.val;
553	// printf( "L val:%#lx(%lu) wd:%u pc:%u base:%c neg:%d pc:%d left:%d nobsdp:%d sign:%d pad0:%d\n",
554	// f.val, f.val, f.wd, f.pc, f.base, f.flags.neg, f.flags.pc, f.flags.left, f.flags.nobsdp, f.flags.sign, f.flags.pad0 );
555	(ostype &)(os \| f);
556
557	// remaining middle and end chunks are padded with 0s on the left
558	if ( ! f.flags.left ) { f.flags.pad0 = true; f.flags.pc = false; } // left pad with 0s
559	else { f.pc = maxdig; f.flags.pc = true; } // left pad with precision
560
561	if ( cnt != 0 ) nosep( os ); // no seperator between chunks
562	f.wd = wd; // reset f.wd for next chunk
563	f.flags.sign = false; // no leading +/- sign
564	f.flags.nobsdp = true; // no leading base prefix
565	} // if
566	} // base_128
567
568	#define INTEGRAL_FMT_IMPL128( T ) \
569	forall( ostype & \| basic_ostream( ostype ) ) { \
570	ostype & ?\|?( ostype & os, _Ostream_Manip(T) f ) { \
571	_Ostream_Manip(uint64_t) fmt; \
572	fmt.[wd, pc, base, all] = f.[wd, pc, base, all]; \
573	if ( f.base == 'b' \| f.base == 'B' ) { \
574	base_128( os, f.val, (unsigned int128)1 << 64, fmt, 64, 1 ); \
575	} else if ( f.base == 'o' ) { \
576	base_128( os, f.val, (unsigned int128)1 << 63, fmt, 21, 3 ); \
577	} else if ( f.base == 'd' \|\| f.base == 'u' ) { \
578	if ( f.base == 'd' && f.val < 0 ) { f.val = -f.val; fmt.flags.neg = true; } \
579	base_128( os, f.val, (unsigned int128)10_000_000_000_000_000_000UL, fmt, 19, 0 ); \
580	} else { \
581	base_128( os, f.val, (unsigned int128)1 << 64, fmt, 16, 4 ); \
582	} /* if */ \
583	return os; \
584	} /* ?\|? */ \
585	OSTYPE_VOID_IMPL( _Ostream_Manip(T) ) \
586	} // distribution
587
588	INTEGRAL_FMT_IMPL128( int128 )
589	INTEGRAL_FMT_IMPL128( unsigned int128 )
590	#endif // __SIZEOF_INT128__
591
592	// ********************************* floating point *********************************
593
594	static const char *suffixes[] = {
595	"y", "z", "a", "f", "p", "n", "u", "m", "",
596	"K", "M", "G", "T", "P", "E", "Z", "Y"
597	};
598	#define SUFFIXES_START (-24) /* Smallest power for which there is a suffix defined. */
599	#define SUFFIXES_END (SUFFIXES_START + (int)((sizeof(suffixes) / sizeof(char ) - 1) 3))
600
601	#define PRINT_WITH_DP2( os, format, ... ) \
602	{ \
603	if ( ! f.flags.eng ) { \
604	len = snprintf( buf, size, format, ##__VA_ARGS__ ); \
605	if ( isfinite( f.val ) && ! f.flags.nobsdp ) { /* if number, print decimal point when no fraction or exponent */ \
606	for ( i = 0; i < len && buf[i] != '.' && buf[i] != 'e' && buf[i] != 'E' && \
607	buf[i] != 'p' && buf[i] != 'P'; i += 1 ); /* decimal point or scientific ? */ \
608	if ( i == len ) { \
609	if ( ! f.flags.left ) { \
610	buf[i] = '.'; buf[i + 1] = '\0'; \
611	if ( buf[0] == ' ' ) bufbeg = 1; /* decimal point within width */ \
612	} else { \
613	for ( i = 0; i < len && buf[i] != ' '; i += 1 ); /* trailing blank ? */ \
614	buf[i] = '.'; \
615	if ( i == len ) buf[i + 1] = '\0'; \
616	} /* if */ \
617	} /* if */ \
618	} /* if */ \
619	} else { \
620	int exp10, len2; \
621	eng( f.val, f.pc, exp10 ); /* changes arguments */ \
622	/* printf( "%g %d %d %d %s\n", f.val, f.wd, f.pc, exp10, format ); */ \
623	if ( ! f.flags.left && f.wd > 1 ) { \
624	/* Exponent size: 'e', optional minus sign, number of digits: log10(0) => undefined */ \
625	f.wd -= 1 + (exp10 < 0 ? 1 : 0) + lrint( floor( exp10 == 0 ? 0 : log10( abs( exp10 ) ) ) ) + 1; \
626	if ( f.wd < 1 ) f.wd = 1; \
627	} /* if */ \
628	len = snprintf( buf, size, format, ##__VA_ARGS__ ); \
629	if ( f.flags.left ) { \
630	for ( len -= 1; len > 0 && buf[len] == ' '; len -= 1 ); \
631	len += 1; \
632	} /* if */ \
633	if ( ! f.flags.nobsdp \|\| (exp10 < SUFFIXES_START) \|\| (exp10 > SUFFIXES_END) ) { \
634	len2 = snprintf( &buf[len], size - len, "e%d", (int)exp10 /* ambiguity with function exp10 */ ); \
635	} else { \
636	len2 = snprintf( &buf[len], size - len, "%s", suffixes[(exp10 - SUFFIXES_START) / 3] ); \
637	} /* if */ \
638	if ( f.flags.left && len + len2 < f.wd ) buf[len + len2] = ' '; \
639	} /* if */ \
640	fmt( os, "%s", &buf[bufbeg] ); \
641	}
642
643	#define FLOATING_POINT_FMT_IMPL( T, DFMTNP, DFMTP ) \
644	forall( ostype & \| basic_ostream( ostype ) ) { \
645	static void eng( T &value, int & pc, int & exp10 ) { \
646	exp10 = lrint( floor( log10( abs( value ) ) ) ); /* round to desired precision */ \
647	if ( exp10 < 0 ) exp10 -= 2; \
648	exp10 = floor( exp10, 3 ); \
649	value *= pow( 10.0, -exp10 ); \
650	if ( pc <= 3 ) pc = 3; \
651	} /* eng */ \
652	\
653	ostype & ?\|?( ostype & os, _Ostream_Manip(T) f ) { \
654	enum { size = 48 }; \
655	char buf[size]; \
656	int bufbeg = 0, i, len; \
657	\
658	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) ); \
659	char fmtstr[sizeof(DFMTP) + 8]; /* sizeof includes '\0' */ \
660	if ( ! f.flags.pc ) memcpy( &fmtstr, DFMTNP, sizeof(DFMTNP) ); \
661	else memcpy( &fmtstr, DFMTP, sizeof(DFMTP) ); \
662	int star = 5; /* position before first '' / \
663	\
664	/* Insert flags into spaces before '', from right to left. / \
665	if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; } \
666	if ( f.flags.sign ) { fmtstr[star] = '+'; star -= 1; } \
667	if ( f.flags.pad0 ) { fmtstr[star] = '0'; star -= 1; } \
668	fmtstr[star] = '\''; star -= 1; /* locale */ \
669	fmtstr[star] = '%'; \
670	\
671	if ( ! f.flags.pc ) { /* no precision */ \
672	fmtstr[sizeof(DFMTNP)-2] = f.base; /* sizeof includes '\0' */ \
673	/* printf( "%g %d %s\n", f.val, f.wd, &fmtstr[star] ); */ \
674	PRINT_WITH_DP2( os, &fmtstr[star], f.wd, f.val ) \
675	} else { /* precision */ \
676	fmtstr[sizeof(DFMTP)-2] = f.base; /* sizeof includes '\0' */ \
677	/* printf( "%g %d %d %s\n", f.val, f.wd, f.pc, &fmtstr[star] ); */ \
678	PRINT_WITH_DP2( os, &fmtstr[star], f.wd, f.pc, f.val ) \
679	} /* if */ \
680	return os; \
681	} /* ?\|? */ \
682	\
683	OSTYPE_VOID_IMPL( _Ostream_Manip(T) ) \
684	} // distribution
685
686	FLOATING_POINT_FMT_IMPL( double, " * ", " . " )
687	FLOATING_POINT_FMT_IMPL( long double, " L ", " .*L " )
688
689	// ********************************* character *********************************
690
691	forall( ostype & \| basic_ostream( ostype ) ) {
692	ostype & ?\|?( ostype & os, _Ostream_Manip(char) f ) {
693	if ( f.base != 'c' ) { // bespoke binary/octal/hex format
694	_Ostream_Manip(unsigned char) fmtuc @= { f.val, f.wd, f.pc, f.base, {'\0'} };
695	fmtuc.flags.pc = f.flags.pc;
696	fmtuc.flags.nobsdp = f.flags.nobsdp;
697	// os \| fmtuc \| nonl;
698	(ostype &)(os \| fmtuc);
699	return os;
700	} // if
701
702	if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
703
704	#define CFMTNP "% * "
705	char fmtstr[sizeof(CFMTNP)]; // sizeof includes '\0'
706	memcpy( &fmtstr, CFMTNP, sizeof(CFMTNP) );
707	int star = 1; // position before first '*'
708
709	// Insert flags into spaces before '*', from right to left.
710	if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; }
711	fmtstr[star] = '%';
712
713	fmtstr[sizeof(CFMTNP)-2] = f.base; // sizeof includes '\0'
714	// printf( "%d %s\n", f.wd, &fmtstr[star] );
715	fmt( os, &fmtstr[star], f.wd, f.val );
716	return os;
717	} // ?\|?
718	OSTYPE_VOID_IMPL( _Ostream_Manip(char) )
719	} // distribution
720
721	// ********************************* C string *********************************
722
723	forall( ostype & \| basic_ostream( ostype ) ) {
724	ostype & ?\|?( ostype & os, _Ostream_Manip(const char *) f ) {
725	if ( ! f.val ) return os; // null pointer ?
726
727	if ( f.base != 's' ) { // bespoke binary/octal/hex format
728	_Ostream_Manip(unsigned char) fmtuc @= { 0, f.wd, f.pc, f.base, {'\0'} };
729	fmtuc.flags.pc = f.flags.pc;
730	fmtuc.flags.nobsdp = f.flags.nobsdp;
731	for ( i; 0 ~ @ : @; f.val[i] != '\0' ) {
732	fmtuc.val = f.val[i];
733	// os \| fmtuc \| nonl;
734	(ostype &)(os \| fmtuc);
735	} // for
736	return os;
737	} // if
738
739	if ( f.val[0] != '\0' && // null string => no leading separator
740	sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
741
742	#define SFMTNP "% * "
743	#define SFMTP "% . "
744	char fmtstr[sizeof(SFMTP)]; // sizeof includes '\0'
745	if ( ! f.flags.pc ) memcpy( &fmtstr, SFMTNP, sizeof(SFMTNP) );
746	else memcpy( &fmtstr, SFMTP, sizeof(SFMTP) );
747	int star = 1; // position before first '*'
748
749	// Insert flags into spaces before '*', from right to left.
750	if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; }
751	fmtstr[star] = '%';
752
753	if ( ! f.flags.pc ) { // no precision
754	// printf( "%d %s\n", f.wd, &fmtstr[star] );
755	fmtstr[sizeof(SFMTNP)-2] = f.base; // sizeof includes '\0'
756	fmt( os, &fmtstr[star], f.wd, f.val );
757	} else { // precision
758	fmtstr[sizeof(SFMTP)-2] = f.base; // sizeof includes '\0'
759	// printf( "%d %d %s\n", f.wd, f.pc, &fmtstr[star] );
760	fmt( os, &fmtstr[star], f.wd, f.pc, f.val );
761	} // if
762	if ( f.val[0] == '\0' ) { nosep( os ); } // null string => no trailing separator
763	return os;
764	} // ?\|?
765	OSTYPE_VOID_IMPL( _Ostream_Manip(const char *) )
766	} // distribution
767
768
769	// ********************************* istream *********************************
770
771
772	forall( istype & \| basic_istream( istype ) ) {
773	istype & ?\|?( istype & is, bool & b ) {
774	char val[6];
775	fmt( is, "%5s", val );
776	if ( strcmp( val, "true" ) == 0 ) b = true;
777	else if ( strcmp( val, "false" ) == 0 ) b = false;
778	else {
779	fprintf( stderr, "invalid Boolean constant\n" );
780	abort(); // cannot use abort stream
781	} // if
782	return is;
783	} // ?\|?
784	ISTYPE_VOID_IMPL( bool & )
785
786	istype & ?\|?( istype & is, char & c ) {
787	char temp;
788	for () {
789	fmt( is, "%c", &temp ); // must pass pointer through varg to fmt
790	// do not overwrite parameter with newline unless appropriate
791	if ( temp != '\n' \|\| getANL$( is ) ) { c = temp; break; }
792	if ( eof( is ) ) break;
793	} // for
794	return is;
795	} // ?\|?
796	ISTYPE_VOID_IMPL( char & )
797
798	istype & ?\|?( istype & is, signed char & sc ) {
799	fmt( is, "%hhi", &sc );
800	return is;
801	} // ?\|?
802	ISTYPE_VOID_IMPL( signed char & )
803
804	istype & ?\|?( istype & is, unsigned char & usc ) {
805	fmt( is, "%hhi", &usc );
806	return is;
807	} // ?\|?
808	ISTYPE_VOID_IMPL( unsigned char & )
809
810	istype & ?\|?( istype & is, short int & si ) {
811	fmt( is, "%hi", &si );
812	return is;
813	} // ?\|?
814	ISTYPE_VOID_IMPL( short int & )
815
816	istype & ?\|?( istype & is, unsigned short int & usi ) {
817	fmt( is, "%hi", &usi );
818	return is;
819	} // ?\|?
820	ISTYPE_VOID_IMPL( unsigned short int & )
821
822	istype & ?\|?( istype & is, int & i ) {
823	fmt( is, "%i", &i );
824	return is;
825	} // ?\|?
826	ISTYPE_VOID_IMPL( int & )
827
828	istype & ?\|?( istype & is, unsigned int & ui ) {
829	fmt( is, "%i", &ui );
830	return is;
831	} // ?\|?
832	ISTYPE_VOID_IMPL( unsigned int & )
833
834	istype & ?\|?( istype & is, long int & li ) {
835	fmt( is, "%li", &li );
836	return is;
837	} // ?\|?
838	ISTYPE_VOID_IMPL( long int & )
839
840	istype & ?\|?( istype & is, unsigned long int & ulli ) {
841	fmt( is, "%li", &ulli );
842	return is;
843	} // ?\|?
844	ISTYPE_VOID_IMPL( unsigned long int & )
845
846	istype & ?\|?( istype & is, long long int & lli ) {
847	fmt( is, "%lli", &lli );
848	return is;
849	} // ?\|?
850	ISTYPE_VOID_IMPL( long long int & )
851
852	istype & ?\|?( istype & is, unsigned long long int & ulli ) {
853	fmt( is, "%lli", &ulli );
854	return is;
855	} // ?\|?
856	ISTYPE_VOID_IMPL( unsigned long long int & )
857
858	#if defined( __SIZEOF_INT128__ )
859	istype & ?\|?( istype & is, int128 & llli ) {
860	return (istype &)(is \| (unsigned int128 &)llli);
861	} // ?\|?
862	ISTYPE_VOID_IMPL( int128 & )
863
864	istype & ?\|?( istype & is, unsigned int128 & ullli ) {
865	char s[40];
866	bool sign = false;
867
868	if ( fmt( is, " %[-]", s ) == 1 ) sign = true; // skip whitespace, negative sign ?
869	// If the input is too large, the value returned is undefined. If there is no input, no value is returned
870	if ( fmt( is, "%39[0-9]%*[0-9]", s ) == 1 ) { // take first 39 characters, ignore remaining
871	ullli = 0;
872	for ( i; 0 ~ @ : @; s[i] != '\0' ) {
873	ullli = ullli * 10 + s[i] - '0';
874	} // for
875	if ( sign ) ullli = -ullli;
876	} else if ( sign ) ungetc( is, '-' ); // return minus when no digits
877	return is;
878	} // ?\|?
879	ISTYPE_VOID_IMPL( unsigned int128 & )
880	#endif // __SIZEOF_INT128__
881
882	istype & ?\|?( istype & is, float & f ) {
883	fmt( is, "%f", &f );
884	return is;
885	} // ?\|?
886	ISTYPE_VOID_IMPL( float & )
887
888	istype & ?\|?( istype & is, double & d ) {
889	fmt( is, "%lf", &d );
890	return is;
891	} // ?\|?
892	ISTYPE_VOID_IMPL( double & )
893
894	istype & ?\|?( istype & is, long double & ld ) {
895	fmt( is, "%Lf", &ld );
896	return is;
897	} // ?\|?
898	ISTYPE_VOID_IMPL( long double & )
899
900	istype & ?\|?( istype & is, float _Complex & fc ) {
901	float re, im;
902	fmt( is, "%f%fi", &re, &im );
903	fc = re + im * _Complex_I;
904	return is;
905	} // ?\|?
906	ISTYPE_VOID_IMPL( float _Complex & )
907
908	istype & ?\|?( istype & is, double _Complex & dc ) {
909	double re, im;
910	fmt( is, "%lf%lfi", &re, &im );
911	dc = re + im * _Complex_I;
912	return is;
913	} // ?\|?
914	ISTYPE_VOID_IMPL( double _Complex & )
915
916	istype & ?\|?( istype & is, long double _Complex & ldc ) {
917	long double re, im;
918	fmt( is, "%Lf%Lfi", &re, &im );
919	ldc = re + im * _Complex_I;
920	return is;
921	} // ?\|?
922	ISTYPE_VOID_IMPL( long double _Complex & )
923
924	istype & ?\|?( istype & is, const char fmt[] ) {
925	fmt( is, fmt, "" );
926	return is;
927	} // ?\|?
928	ISTYPE_VOID_IMPL( const char * )
929
930	// manipulators
931	istype & ?\|?( istype & is, istype & (* manip)( istype & ) ) {
932	return manip( is );
933	} // ?\|?
934
935	void ?\|?( istype & is, istype & (* manip)( istype & ) ) {
936	manip( is ); ends( is );
937	} // ?\|?
938
939	istype & nl( istype & is ) {
940	fmt( is, "%*[^\n]" ); // ignore characters to newline
941	if ( ! eof( is ) && getANL$( is ) ) fmt( is, "%*c" ); // read newline
942	return is;
943	} // nl
944
945	istype & nlOn( istype & is ) {
946	nlOn( is ); // call void returning
947	return is;
948	} // nlOn
949
950	istype & nlOff( istype & is ) {
951	nlOff( is ); // call void returning
952	return is;
953	} // nlOff
954	} // distribution
955
956	// ********************************* manipulators *********************************
957
958	forall( istype & \| basic_istream( istype ) ) {
959	istype & ?\|?( istype & is, _Istream_Cskip f ) {
960	// printf( "skip %s %d\n", f.scanset, f.wd );
961	if ( f.scanset ) fmt( is, f.scanset, "" ); // no input arguments
962	else for ( f.wd ) fmt( is, "%*c" );
963	return is;
964	}
965	ISTYPE_VOID_IMPL( _Istream_Cskip )
966
967	istype & ?\|?( istype & is, _Istream_Cstr f ) {
968	const char * scanset = f.scanset;
969	if ( f.flags.delimiter ) scanset = f.delimiter; // getline ?
970
971	size_t len = 0;
972	if ( scanset ) len = strlen( scanset );
973	char fmtstr[len + 16];
974	int start = 1;
975	fmtstr[0] = '%';
976	if ( f.flags.ignore ) { fmtstr[1] = '*'; start += 1; }
977	// no maximum width necessary because text ignored => width is read width
978	if ( f.wd != -1 ) { start += sprintf( &fmtstr[start], "%d", f.wd ); }
979
980	if ( ! scanset ) {
981	// %s, %s, %ws, %ws
982	fmtstr[start] = 's'; fmtstr[start + 1] = '\0';
983	// printf( "cstr %s\n", fmtstr );
984	} else {
985	// incl %[xxx], %[xxx], %w[xxx], %w[xxx]
986	// excl %[^xxx], %[^xxx], %w[^xxx], %w[^xxx]
987	fmtstr[start] = '['; start += 1;
988	if ( f.flags.inex ) { fmtstr[start] = '^'; start += 1; }
989	strcpy( &fmtstr[start], scanset ); // copy includes '\0'
990	len += start;
991	fmtstr[len] = ']'; fmtstr[len + 1] = '\0';
992	// printf( "incl/excl %s\n", fmtstr );
993	} // if
994
995	int check = f.wd - 1;
996	if ( ! f.flags.rwd ) f.s[check] = '\0'; // insert sentinel
997	len = fmt( is, fmtstr, f.s );
998	//fprintf( stderr, "KK %s %zd %d %c %s\n", fmtstr, len, check, f.s[check], f.s );
999
1000	if ( ! f.flags.rwd && f.s[check] != '\0' ) // sentinel overwritten ?
1001	throw (cstring_length){ &cstring_length_vt };
1002
1003	if ( f.flags.delimiter ) { // getline ?
1004	if ( len == 0 ) f.s[0] = '\0'; // empty read => argument unchanged => set empty
1005	if ( ! eof( is ) ) { // ignore delimiter, may not be present because of width
1006	char delimiter;
1007	fmt( is, "%c", &delimiter );
1008	if ( delimiter != f.delimiter[0] ) ungetc( is, delimiter );
1009	} // if
1010	} //if
1011	return is;
1012	} // ?\|?
1013	ISTYPE_VOID_IMPL( _Istream_Cstr )
1014
1015	istype & ?\|?( istype & is, _Istream_Char f ) {
1016	fmt( is, "%*c" ); // argument variable unused
1017	return is;
1018	} // ?\|?
1019	ISTYPE_VOID_IMPL( _Istream_Char )
1020	} // distribution
1021
1022	#define INPUT_FMT_IMPL( T, CODE ) \
1023	forall( istype & \| basic_istream( istype ) ) { \
1024	istype & ?\|?( istype & is, _Istream_Manip(T) f ) { \
1025	enum { size = 16 }; \
1026	char fmtstr[size]; \
1027	if ( f.wd == -1 ) { \
1028	snprintf( fmtstr, size, "%%%s%s", f.ignore ? "*" : "", CODE ); \
1029	} else { \
1030	snprintf( fmtstr, size, "%%%s%d%s", f.ignore ? "*" : "", f.wd, CODE ); \
1031	} /* if */ \
1032	/* printf( "%d %s %p\n", f.wd, fmtstr, &f.val ); */ \
1033	fmt( is, fmtstr, &f.val ); \
1034	return is; \
1035	} /* ?\|? */ \
1036	ISTYPE_VOID_IMPL( _Istream_Manip(T) ) \
1037	} // distribution
1038
1039	INPUT_FMT_IMPL( signed char, "hhi" )
1040	INPUT_FMT_IMPL( unsigned char, "hhi" )
1041	INPUT_FMT_IMPL( signed short int, "hi" )
1042	INPUT_FMT_IMPL( unsigned short int, "hi" )
1043	INPUT_FMT_IMPL( signed int, "i" )
1044	INPUT_FMT_IMPL( unsigned int, "i" )
1045	INPUT_FMT_IMPL( signed long int, "li" )
1046	INPUT_FMT_IMPL( unsigned long int, "li" )
1047	INPUT_FMT_IMPL( signed long long int, "lli" )
1048	INPUT_FMT_IMPL( unsigned long long int, "lli" )
1049
1050	INPUT_FMT_IMPL( float, "f" )
1051	INPUT_FMT_IMPL( double, "lf" )
1052	INPUT_FMT_IMPL( long double, "Lf" )
1053
1054	forall( istype & \| basic_istream( istype ) ) {
1055	istype & ?\|?( istype & is, _Istream_Manip(float _Complex) fc ) {
1056	float re, im;
1057	_Istream_Manip(float) fmtuc @= { re, fc.wd, fc.ignore };
1058	is \| fmtuc;
1059	&fmtuc.val = &im;
1060	is \| fmtuc;
1061	if ( ! fc.ignore ) fc.val = re + im * _Complex_I; // re/im are uninitialized for ignore
1062	return is;
1063	} // ?\|?
1064	ISTYPE_VOID_IMPL( _Istream_Manip(float _Complex) )
1065
1066	istype & ?\|?( istype & is, _Istream_Manip(double _Complex) dc ) {
1067	double re, im;
1068	_Istream_Manip(double) fmtuc @= { re, dc.wd, dc.ignore };
1069	is \| fmtuc;
1070	&fmtuc.val = &im;
1071	is \| fmtuc;
1072	if ( ! dc.ignore ) dc.val = re + im * _Complex_I; // re/im are uninitialized for ignore
1073	return is;
1074	} // ?\|?
1075	ISTYPE_VOID_IMPL( _Istream_Manip(double _Complex) )
1076
1077	istype & ?\|?( istype & is, _Istream_Manip(long double _Complex) ldc ) {
1078	long double re, im;
1079	_Istream_Manip(long double) fmtuc @= { re, ldc.wd, ldc.ignore };
1080	is \| fmtuc;
1081	&fmtuc.val = &im;
1082	is \| fmtuc;
1083	if ( ! ldc.ignore ) ldc.val = re + im * _Complex_I; // re/im are uninitialized for ignore
1084	return is;
1085	} // ?\|?
1086	ISTYPE_VOID_IMPL( _Istream_Manip(long double _Complex) )
1087	} // distribution
1088
1089
1090	// Local Variables: //
1091	// tab-width: 4 //
1092	// compile-command: "cfa iostream.cfa" //
1093	// End: //

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