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authorClifford Wolf <clifford@clifford.at>2013-02-27 09:32:19 +0100
committerClifford Wolf <clifford@clifford.at>2013-02-27 09:32:19 +0100
commita321a5c412090d04dfaea4b4876c4901c42cfe44 (patch)
treeb08d286e0aea76be9aab7a543df0b51e76b6ede4 /libs/bigint/BigIntegerUtils.cc
parent4f0c2862a0d7e1ca247e0a4d54301c7f8cc92fd8 (diff)
Moved stand-alone libs to libs/ directory and added libs/subcircuit
Diffstat (limited to 'libs/bigint/BigIntegerUtils.cc')
-rw-r--r--libs/bigint/BigIntegerUtils.cc50
1 files changed, 50 insertions, 0 deletions
diff --git a/libs/bigint/BigIntegerUtils.cc b/libs/bigint/BigIntegerUtils.cc
new file mode 100644
index 00000000..44073af6
--- /dev/null
+++ b/libs/bigint/BigIntegerUtils.cc
@@ -0,0 +1,50 @@
+#include "BigIntegerUtils.hh"
+#include "BigUnsignedInABase.hh"
+
+std::string bigUnsignedToString(const BigUnsigned &x) {
+ return std::string(BigUnsignedInABase(x, 10));
+}
+
+std::string bigIntegerToString(const BigInteger &x) {
+ return (x.getSign() == BigInteger::negative)
+ ? (std::string("-") + bigUnsignedToString(x.getMagnitude()))
+ : (bigUnsignedToString(x.getMagnitude()));
+}
+
+BigUnsigned stringToBigUnsigned(const std::string &s) {
+ return BigUnsigned(BigUnsignedInABase(s, 10));
+}
+
+BigInteger stringToBigInteger(const std::string &s) {
+ // Recognize a sign followed by a BigUnsigned.
+ return (s[0] == '-') ? BigInteger(stringToBigUnsigned(s.substr(1, s.length() - 1)), BigInteger::negative)
+ : (s[0] == '+') ? BigInteger(stringToBigUnsigned(s.substr(1, s.length() - 1)))
+ : BigInteger(stringToBigUnsigned(s));
+}
+
+std::ostream &operator <<(std::ostream &os, const BigUnsigned &x) {
+ BigUnsignedInABase::Base base;
+ long osFlags = os.flags();
+ if (osFlags & os.dec)
+ base = 10;
+ else if (osFlags & os.hex) {
+ base = 16;
+ if (osFlags & os.showbase)
+ os << "0x";
+ } else if (osFlags & os.oct) {
+ base = 8;
+ if (osFlags & os.showbase)
+ os << '0';
+ } else
+ throw "std::ostream << BigUnsigned: Could not determine the desired base from output-stream flags";
+ std::string s = std::string(BigUnsignedInABase(x, base));
+ os << s;
+ return os;
+}
+
+std::ostream &operator <<(std::ostream &os, const BigInteger &x) {
+ if (x.getSign() == BigInteger::negative)
+ os << '-';
+ os << x.getMagnitude();
+ return os;
+}