bc: generate large bc tests on the fly, -5 mbytes in the git tree

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

testsuite/bc.tests

@@ -245,7 +245,39 @@ testing "bc ibase" \
 	"99\n1295\n1224\n" \
 	"" "a=ZZ;a;ibase=36;a=ZZ;a;ibase=Z;a=ZZ;a"
 
-tar xJf bc_large.tar.xz
+testing "bc parsing of numbers" \
+	"bc 2>&1 | bc 2>&1 | md5sum 2>&1" \
+	"465d8c01308d0863b6f5669e8a1c69fb  -\n" \
+	"" '
+for (b = 2; b <= 16; ++b) {
+	if (b == 10) continue
+	obase = 10
+	print "ibase = A; ibase = ", b, "\n"
+	obase = b
+	for (i = 0; i <= 65536; ++i) {
+		i
+		print "0.", i, "\n"
+		print "1.", i, "\n"
+		print i, ".", i, "\n"
+	}
+}'
+
+testing "bc printing of numbers" \
+	"bc 2>&1 | bc 2>&1 | md5sum 2>&1" \
+	"d884b35d251ca096410712743aeafb9e  -\n" \
+	"" '
+for (b = 2; b <= 101; ++b) {
+	if (b == 10) continue
+	s = b * b
+	print "obase = ", b, "\n"
+	for (i = 0; i <= s; ++i) {
+		i
+		print "0.", i, "\n"
+		print "1.", i, "\n"
+		print i, ".", i, "\n"
+	}
+	2189432174861923048671023498128347619023487610234689172304.192748960128745108927461089237469018723460
+}'
 
 for f in bc*.bc; do
 	r="`basename "$f" .bc`_results.txt"