1 /* go-print.c -- support for the go print statement.
3 Copyright 2009 The Go Authors. All rights reserved.
4 Use of this source code is governed by a BSD-style
5 license that can be found in the LICENSE file. */
13 #include "go-string.h"
14 #include "interface.h"
16 /* This implements the various little functions which are called by
17 the predeclared functions print/println/panic/panicln. */
32 __go_print_string (struct __go_string val
)
34 fprintf (stderr
, "%.*s", (int) val
.__length
, (const char *) val
.__data
);
38 __go_print_uint64 (uint64_t val
)
40 fprintf (stderr
, "%llu", (unsigned long long) val
);
44 __go_print_int64 (int64_t val
)
46 fprintf (stderr
, "%lld", (long long) val
);
50 __go_print_double (double v
)
58 fputs ("NaN", stderr
);
61 if (__builtin_isinf (v
))
63 putc (v
< 0 ? '-' : '+', stderr
);
64 fputs ("Inf", stderr
);
68 /* The number of digits printed. */
96 for (i
= 0; i
< n
; ++i
)
107 /* The format is +d.dddd+edd. */
108 buf
[0] = s
? '-' : '+';
109 for (i
= 0; i
< n
; ++i
)
114 buf
[i
+ 2] = d
+ '0';
122 buf
[n
+ 3] = e
< 0 ? '-' : '+';
125 buf
[n
+ 4] = e
/ 100 + '0';
126 buf
[n
+ 5] = (e
/ 10) % 10 + '0';
127 buf
[n
+ 6] = e
% 10 + '0';
133 __go_print_complex (__complex
double val
)
136 __go_print_double (__builtin_creal (val
));
137 __go_print_double (__builtin_cimag (val
));
138 fputs ("i)", stderr
);
142 __go_print_bool (_Bool val
)
144 fputs (val
? "true" : "false", stderr
);
148 __go_print_pointer (void *val
)
150 fprintf (stderr
, "0x%lx", (unsigned long) (uintptr_t) val
);
154 __go_print_empty_interface (struct __go_empty_interface e
)
156 fprintf (stderr
, "(%p,%p)", e
.__type_descriptor
, e
.__object
);
160 __go_print_interface (struct __go_interface i
)
162 fprintf (stderr
, "(%p,%p)", i
.__methods
, i
.__object
);
166 __go_print_slice (struct __go_open_array val
)
168 fprintf (stderr
, "[%d/%d]", val
.__count
, val
.__capacity
);
169 __go_print_pointer (val
.__values
);