78 lines
1.2 KiB
C
78 lines
1.2 KiB
C
/*
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* floatpr.c - print floating point numbers
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*/
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/* $Header$ */
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#ifndef NOFLOAT
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#include "loc_incl.h"
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char *
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_pfloat(long double r, register char *s, int n, int flags)
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{
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register char *s1;
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int sign, dp;
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register int i;
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s1 = fcvt(r, n, &dp, &sign);
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if (sign)
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*s++ = '-';
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else if (flags & FL_SIGN)
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*s++ = '+';
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else if (flags & FL_SPACE)
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*s++ = ' ';
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if (dp<=0)
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*s++ = '0';
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for (i=dp; i>0; i--)
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if (*s1) *s++ = *s1++;
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else *s++ = '0';
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if (((i=n) > 0) || (flags & FL_ALT))
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*s++ = '.';
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while (++dp <= 0) {
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if (--i<0)
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break;
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*s++ = '0';
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}
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while (--i >= 0)
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if (*s1) *s++ = *s1++;
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else *s++ = '0';
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return s;
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}
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char *
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_pscien(long double r, register char *s, int n, int flags)
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{
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int sign, dp;
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register char *s1;
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s1 = ecvt(r, n + 1, &dp, &sign);
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if (sign)
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*s++ = '-';
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else if (flags & FL_SIGN)
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*s++ = '+';
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else if (flags & FL_SPACE)
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*s++ = ' ';
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*s++ = *s1++;
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if ((n > 0) || (flags & FL_ALT))
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*s++ = '.';
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while (--n>0)
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if (*s1) *s++ = *s1++;
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else *s++ = '0';
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*s++ = 'e';
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if ( r != 0 ) --dp ;
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if ( dp<0 ) {
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*s++ = '-' ; dp= -dp ;
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} else {
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*s++ = '+' ;
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}
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if (dp >= 100) {
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*s++ = '0' + (dp / 100);
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dp %= 100;
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}
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*s++ = '0' + (dp/10);
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*s++ = '0' + (dp%10);
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return s;
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}
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#endif /* NOFLOAT */
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