Release calc version 2.10.2t30

longlong.c

@@ -0,0 +1,104 @@
+/*
+ * longlong - Determine the number if bits in a long long, if is exists
+ *
+ * usage:
+ *	longlong [bits]
+ *
+ *	bits if empty or missing causes this prog to compute its length,
+ *	     if 0, this prog will output nothing
+ *	     otherwise this prog will assume it is the long long bit length
+ *
+ * Not all compilers support the long long type, so this may not compile
+ * on your system.
+ *
+ * This prog outputs several defines:
+ *
+ *	HAVE_LONGLONG
+ *		defined ==> ok to use long long
+ *		undefined ==> do not use long long, even if they exist
+ *
+ *	LONGLONG_BITS
+ *		0 ==> do not use long long, even if they exist
+ *		!= 0 ==> bits in an unsigned long long
+ */
+/*
+ * Copyright (c) 1995 by Landon Curt Noll.  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, this permission notice and text
+ * this comment, and the disclaimer below appear in all of the following:
+ *
+ *	supporting documentation
+ *	source copies
+ *	source works derived from this source
+ *	binaries derived from this source or from derived source
+ *
+ * LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
+ * EVENT SHALL LANDON CURT NOLL 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.
+ *
+ * chongo was here	/\../\
+ */
+
+
+#include <stdio.h>
+
+#include "have_stdlib.h"
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#include "have_string.h"
+#if defined(HAVE_STRING_H)
+#include <string.h>
+#endif
+
+
+/*
+ * have the compiler try its hand with unsigned and signed long longs
+ */
+unsigned long long val = 4294967297ULL;
+long long val2 = -4294967297LL;
+
+
+MAIN
+main(int argc, char **argv)
+{
+	int longlong_bits;	/* bits in a long long, or <=0 => dont use */
+
+	/*
+	 * parse args
+	 */
+	if (argc < 2) {
+		/* no arg means compute the length */
+		longlong_bits = sizeof(unsigned long long)*8;
+	} else if (strcmp(argv[1], "") == 0) {
+		/* empty arg means compute the length */
+		longlong_bits = sizeof(unsigned long long)*8;
+	} else {
+		longlong_bits = atoi(argv[1]);
+	}
+
+	/*
+	 * length is preset, or 0 ==> do not use
+	 */
+	if (longlong_bits > 0) {
+
+		/*
+		 * if size is longer than an unsigned long, use it
+		 */
+		if (longlong_bits > sizeof(unsigned long)*8) {
+
+			/* use long long length */
+			printf("#define HAVE_LONGLONG\n");
+			printf("#define LONGLONG_BITS %d  /* yes */\n",
+			    longlong_bits);
+		}
+	}
+	exit(0);
+}