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[pf3gnuchains/pf3gnuchains3x.git] / winsup / mingw / mingwex / gdtoa / g__fmt.c

diff --git a/winsup/mingw/mingwex/gdtoa/g__fmt.c b/winsup/mingw/mingwex/gdtoa/g__fmt.c
new file mode 100755 (executable)
index 0000000..49bd95a
--- /dev/null
+++ b/winsup/mingw/mingwex/gdtoa/g__fmt.c
@@ -0,0 +1,142 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to ".").     */
+
+#include "gdtoaimp.h"
+
+#ifdef USE_LOCALE
+#include "locale.h"
+#endif
+
+char *__g__fmt (char *b, char *s, char *se, int decpt, ULong sign, size_t blen)
+{
+       int i, j, k;
+       char *be, *s0;
+       size_t len;
+#ifdef USE_LOCALE
+#ifdef NO_LOCALE_CACHE
+       char *decimalpoint = localeconv()->decimal_point;
+       size_t dlen = strlen(decimalpoint);
+#else
+       char *decimalpoint;
+       static char *decimalpoint_cache;
+       static size_t dlen;
+       if (!(s0 = decimalpoint_cache)) {
+               s0 = localeconv()->decimal_point;
+               dlen = strlen(s0);
+               if ((decimalpoint_cache = (char*)MALLOC(strlen(s0) + 1))) {
+                       strcpy(decimalpoint_cache, s0);
+                       s0 = decimalpoint_cache;
+               }
+       }
+       decimalpoint = s0;
+#endif
+#else
+#define dlen 0
+#endif
+       s0 = s;
+       len = (se-s) + dlen + 6; /* 6 = sign + e+dd + trailing null */
+       if (blen < len)
+               goto ret0;
+       be = b + blen - 1;
+       if (sign)
+               *b++ = '-';
+       if (decpt <= -4 || decpt > se - s + 5) {
+               *b++ = *s++;
+               if (*s) {
+#ifdef USE_LOCALE
+                       while((*b = *decimalpoint++))
+                               ++b;
+#else
+                       *b++ = '.';
+#endif
+                       while((*b = *s++) !=0)
+                               b++;
+               }
+               *b++ = 'e';
+               /* sprintf(b, "%+.2d", decpt - 1); */
+               if (--decpt < 0) {
+                       *b++ = '-';
+                       decpt = -decpt;
+               }
+               else
+                       *b++ = '+';
+               for(j = 2, k = 10; 10*k <= decpt; j++, k *= 10){}
+               for(;;) {
+                       i = decpt / k;
+                       if (b >= be)
+                               goto ret0;
+                       *b++ = i + '0';
+                       if (--j <= 0)
+                               break;
+                       decpt -= i*k;
+                       decpt *= 10;
+               }
+               *b = 0;
+       }
+       else if (decpt <= 0) {
+#ifdef USE_LOCALE
+               while((*b = *decimalpoint++))
+                       ++b;
+#else
+               *b++ = '.';
+#endif
+               if (be < b - decpt + (se - s))
+                       goto ret0;
+               for(; decpt < 0; decpt++)
+                       *b++ = '0';
+               while((*b = *s++) != 0)
+                       b++;
+       }
+       else {
+               while((*b = *s++) != 0) {
+                       b++;
+                       if (--decpt == 0 && *s) {
+#ifdef USE_LOCALE
+                               while((*b = *decimalpoint++))
+                                       ++b;
+#else
+                               *b++ = '.';
+#endif
+                       }
+               }
+               if (b + decpt > be) {
+ ret0:
+                       b = 0;
+                       goto ret;
+               }
+               for(; decpt > 0; decpt--)
+                       *b++ = '0';
+               *b = 0;
+       }
+ ret:
+       __freedtoa(s0);
+       return b;
+}