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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [coremark/] [cvt.c] - Rev 375
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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); }
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