summaryrefslogtreecommitdiffstats
path: root/testing/open-vm-tools/ecvt.patch
blob: 53e88e9989e315016737d48703871563e57dbe58 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
commit e996e91ca5951c50769dcaa8e074daa973006849
Author: Natanael Copa <ncopa@alpinelinux.org>
Date:   Thu Jul 8 06:39:36 2010 +0000

    add ecvt() implementation

diff --git a/lib/string/Makefile.am b/lib/string/Makefile.am
index 1edab81..5f2e7ab 100644
--- a/lib/string/Makefile.am
+++ b/lib/string/Makefile.am
@@ -23,6 +23,7 @@ libString_la_SOURCES += bsd_vsnprintf.c
 libString_la_SOURCES += bsd_vsnwprintf.c
 libString_la_SOURCES += convertutf.c
 libString_la_SOURCES += str.c
+libString_la_SOURCES += ecvt.c
 
 AM_CFLAGS = @LIB_STRING_CPPFLAGS@
 
diff --git a/lib/string/bsd_output_shared.c b/lib/string/bsd_output_shared.c
index 3616947..321d6f1 100644
--- a/lib/string/bsd_output_shared.c
+++ b/lib/string/bsd_output_shared.c
@@ -64,6 +64,9 @@
 
 #ifndef NO_FLOATING_POINT
 
+extern char* ecvt(double arg, int ndigits, int *decptp, int *signp);
+extern char* fcvt(double arg, int ndigits, int *decptp, int *signp);
+
 /*
  *-----------------------------------------------------------------------------
  *
diff --git a/lib/string/ecvt.c b/lib/string/ecvt.c
new file mode 100644
index 0000000..1979c3d
--- /dev/null
+++ b/lib/string/ecvt.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ *	ecvt converts to decimal
+ *	the number of digits is specified by ndigit
+ *	decptp is set to the position of the decimal point
+ *	signp is set to 0 for positive, 1 for negative
+ */
+
+
+static double ecvt_rint(double x);
+
+static char *cvt();
+
+/* big enough to handle %.20f conversion of 1e308 */
+#define	NDIG		350
+
+char*
+ecvt(arg, ndigits, decptp, signp)
+double arg;
+int ndigits, *decptp, *signp;
+{
+	return(cvt(arg, ndigits, decptp, signp, 1));
+}
+
+char*
+fcvt(arg, ndigits, decptp, signp)
+double arg;
+int ndigits, *decptp, *signp;
+{
+	return(cvt(arg, ndigits, decptp, signp, 0));
+}
+
+static char*
+cvt(arg, ndigits, decptp, signp, eflag)
+double arg;
+int ndigits, *decptp, *signp;
+int eflag;
+{
+	register int decpt;
+	double fi, fj;
+	register char *p, *p1;
+	static char buf[NDIG] = { 0 };
+	double modf();
+
+	if (ndigits < 0)
+		ndigits = 0;
+	if (ndigits >= NDIG-1)
+		ndigits = NDIG-2;
+
+	decpt = 0;
+	*signp = 0;
+	p = &buf[0];
+
+	if (arg == 0) {
+		*decptp = 0;
+		while (p < &buf[ndigits])
+			*p++ = '0';
+		*p = '\0';
+		return(buf);
+	} else if (arg < 0) {
+		*signp = 1;
+		arg = -arg;
+	}
+
+	arg = modf(arg, &fi);
+	p1 = &buf[NDIG];
+
+	/*
+	 * Do integer part
+	 */
+	if (fi != 0) {
+		while (fi != 0) {
+			fj = modf(fi/10, &fi);
+			/**--p1 = (int)((fj+.03)*10) + '0';*/
+			*--p1 = (int)ecvt_rint((fj)*10) + '0';
+			decpt++;
+		}
+		while (p1 < &buf[NDIG])
+			*p++ = *p1++;
+	} else if (arg > 0) {
+		while ((fj = arg*10) < 1) {
+			arg = fj;
+			decpt--;
+		}
+	}
+	*decptp = decpt;
+
+	/*
+	 * do fraction part
+	 * p pts to where fraction should be concatenated
+	 * p1 is how far conversion must go to
+	 */
+	p1 = &buf[ndigits];
+	if (eflag==0) {
+		/* fcvt must provide ndigits after decimal pt */
+		p1 += decpt;
+		/* if decpt was negative, we might done for fcvt */
+		if (p1 < &buf[0]) {
+			buf[0] = '\0';
+			return(buf);
+		}
+	}
+	while (p <= p1 && p < &buf[NDIG]) {
+		arg *= 10;
+		arg = modf(arg, &fj);
+		*p++ = (int)fj + '0';
+	}
+	/*
+	 * if we converted all the way to the end of the
+	 * buf, don't mess with rounding since there's nothing
+	 * significant out here anyway
+	 */
+	if (p1 >= &buf[NDIG]) {
+		buf[NDIG-1] = '\0';
+		return(buf);
+	}
+	/*
+	 * round by adding 5 to last digit and propagating
+	 * carries
+	 */
+	p = p1;
+	*p1 += 5;
+	while (*p1 > '9') {
+		*p1 = '0';
+		if (p1 > buf)
+			++*--p1;
+		else {
+			*p1 = '1';
+			(*decptp)++;
+			if (eflag == 0) {
+				if (p > buf)
+					*p = '0';
+				p++;
+			}
+		}
+	}
+	*p = '\0';
+	return(buf);
+}
+
+static double ecvt_rint(double x)
+{
+	asm("frndint" : "=t" (x) :  "0" (x));
+	return(x);
+}
+