URL https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk

Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [coremark/] [cvt.c] - Blame information for rev 630

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//#include <math.h>
 
double modf(double x, double *iptr);    // Our local version of modf()
 
#define CVTBUFSIZE 80
static char CVTBUF[CVTBUFSIZE];
 
static char *cvt(double arg, int ndigits, int *decpt, int *sign, char *buf,
                 int eflag)
{
        int r2;
        double fi, fj;
        char *p, *p1;
 
        if (ndigits < 0)
                ndigits = 0;
        if (ndigits >= CVTBUFSIZE - 1)
                ndigits = CVTBUFSIZE - 2;
        r2 = 0;
        *sign = 0;
        p = &buf[0];
        if (arg < 0) {
                *sign = 1;
                arg = -arg;
        }
        arg = modf(arg, &fi);
        p1 = &buf[CVTBUFSIZE];
 
        if (fi != 0) {
                p1 = &buf[CVTBUFSIZE];
                while (fi != 0) {
                        fj = modf(fi / 10, &fi);
                        *--p1 = (int)((fj + .03) * 10) + '0';
                        r2++;
                }
                while (p1 < &buf[CVTBUFSIZE])
                        *p++ = *p1++;
        } else if (arg > 0) {
                while ((fj = arg * 10) < 1) {
                        arg = fj;
                        r2--;
                }
        }
        p1 = &buf[ndigits];
        if (eflag == 0)
                p1 += r2;
        *decpt = r2;
        if (p1 < &buf[0]) {
                buf[0] = '\0';
                return buf;
        }
        while (p <= p1 && p < &buf[CVTBUFSIZE]) {
                arg *= 10;
                arg = modf(arg, &fj);
                *p++ = (int)fj + '0';
        }
        if (p1 >= &buf[CVTBUFSIZE]) {
                buf[CVTBUFSIZE - 1] = '\0';
                return buf;
        }
        p = p1;
        *p1 += 5;
        while (*p1 > '9') {
                *p1 = '0';
                if (p1 > buf)
                        ++ * --p1;
                else {
                        *p1 = '1';
                        (*decpt)++;
                        if (eflag == 0) {
                                if (p > buf)
                                        *p = '0';
                                p++;
                        }
                }
        }
        *p = '\0';
        return buf;
}
 
char *ecvt(double arg, int ndigits, int *decpt, int *sign)
{
        return cvt(arg, ndigits, decpt, sign, CVTBUF, 1);
}
 
char *ecvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf)
{
        return cvt(arg, ndigits, decpt, sign, buf, 1);
}
 
char *fcvt(double arg, int ndigits, int *decpt, int *sign)
{
        return cvt(arg, ndigits, decpt, sign, CVTBUF, 0);
}
 
char *fcvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf)
{
        return cvt(arg, ndigits, decpt, sign, buf, 0);
}

Line No.	Rev	Author	Line
1	355	julius	`//#include <math.h>`
2
3	406	julius	`double modf(double x, double *iptr); // Our local version of modf()`
4	355	julius
5			`#define CVTBUFSIZE 80`
6			`static char CVTBUF[CVTBUFSIZE];`
7
8	406	julius	`static char cvt(double arg, int ndigits, int decpt, int sign, char buf,`
9			`int eflag)`
10	355	julius	`{`
11	406	julius	`int r2;`
12			`double fi, fj;`
13			`char p, p1;`
14	355	julius
15	406	julius	`if (ndigits < 0)`
16			`ndigits = 0;`
17			`if (ndigits >= CVTBUFSIZE - 1)`
18			`ndigits = CVTBUFSIZE - 2;`
19			`r2 = 0;`
20			`*sign = 0;`
21			`p = &buf[0];`
22			`if (arg < 0) {`
23			`*sign = 1;`
24			`arg = -arg;`
25			`}`
26			`arg = modf(arg, &fi);`
27			`p1 = &buf[CVTBUFSIZE];`
28	355	julius
29	406	julius	`if (fi != 0) {`
30			`p1 = &buf[CVTBUFSIZE];`
31			`while (fi != 0) {`
32			`fj = modf(fi / 10, &fi);`
33			`--p1 = (int)((fj + .03) 10) + '0';`
34			`r2++;`
35			`}`
36			`while (p1 < &buf[CVTBUFSIZE])`
37			`p++ = p1++;`
38			`} else if (arg > 0) {`
39			`while ((fj = arg * 10) < 1) {`
40			`arg = fj;`
41			`r2--;`
42			`}`
43			`}`
44			`p1 = &buf[ndigits];`
45			`if (eflag == 0)`
46			`p1 += r2;`
47			`*decpt = r2;`
48			`if (p1 < &buf[0]) {`
49			`buf[0] = '\0';`
50			`return buf;`
51			`}`
52			`while (p <= p1 && p < &buf[CVTBUFSIZE]) {`
53			`arg *= 10;`
54			`arg = modf(arg, &fj);`
55			`*p++ = (int)fj + '0';`
56			`}`
57			`if (p1 >= &buf[CVTBUFSIZE]) {`
58			`buf[CVTBUFSIZE - 1] = '\0';`
59			`return buf;`
60			`}`
61			`p = p1;`
62			`*p1 += 5;`
63			`while (*p1 > '9') {`
64			`*p1 = '0';`
65			`if (p1 > buf)`
66			`++ * --p1;`
67			`else {`
68			`*p1 = '1';`
69			`(*decpt)++;`
70			`if (eflag == 0) {`
71			`if (p > buf)`
72			`*p = '0';`
73			`p++;`
74			`}`
75			`}`
76			`}`
77			`*p = '\0';`
78			`return buf;`
79	355	julius	`}`
80
81			`char ecvt(double arg, int ndigits, int decpt, int *sign)`
82			`{`
83	406	julius	`return cvt(arg, ndigits, decpt, sign, CVTBUF, 1);`
84	355	julius	`}`
85
86			`char ecvtbuf(double arg, int ndigits, int decpt, int sign, char buf)`
87			`{`
88	406	julius	`return cvt(arg, ndigits, decpt, sign, buf, 1);`
89	355	julius	`}`
90
91			`char fcvt(double arg, int ndigits, int decpt, int *sign)`
92			`{`
93	406	julius	`return cvt(arg, ndigits, decpt, sign, CVTBUF, 0);`
94	355	julius	`}`
95
96			`char fcvtbuf(double arg, int ndigits, int decpt, int sign, char buf)`
97			`{`
98	406	julius	`return cvt(arg, ndigits, decpt, sign, buf, 0);`
99	355	julius	`}`

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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [coremark/] [cvt.c] - Blame information for rev 630