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//===-- Support/StringExtras.h - Useful string functions --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains some functions that are useful when dealing with strings.
//
//===----------------------------------------------------------------------===//
#ifndef SUPPORT_STRINGEXTRAS_H
#define SUPPORT_STRINGEXTRAS_H
#include "Support/DataTypes.h"
#include <string>
#include <stdio.h>
static inline std::string utohexstr(uint64_t X) {
char Buffer[40];
char *BufPtr = Buffer+39;
*BufPtr = 0; // Null terminate buffer...
if (X == 0) *--BufPtr = '0'; // Handle special case...
while (X) {
unsigned Mod = X & 15;
if (Mod < 10)
*--BufPtr = '0' + Mod;
else
*--BufPtr = 'A' + Mod-10;
X >>= 4;
}
return std::string(BufPtr);
}
static inline std::string utostr(unsigned long long X, bool isNeg = false) {
char Buffer[40];
char *BufPtr = Buffer+39;
*BufPtr = 0; // Null terminate buffer...
if (X == 0) *--BufPtr = '0'; // Handle special case...
while (X) {
*--BufPtr = '0' + (X % 10);
X /= 10;
}
if (isNeg) *--BufPtr = '-'; // Add negative sign...
return std::string(BufPtr);
}
static inline std::string itostr(int64_t X) {
if (X < 0)
return utostr((uint64_t)-X, true);
else
return utostr((uint64_t)X);
}
static inline std::string utostr(unsigned long X, bool isNeg = false) {
return utostr((unsigned long long)X, isNeg);
}
static inline std::string utostr(unsigned X, bool isNeg = false) {
char Buffer[20];
char *BufPtr = Buffer+19;
*BufPtr = 0; // Null terminate buffer...
if (X == 0) *--BufPtr = '0'; // Handle special case...
while (X) {
*--BufPtr = '0' + (X % 10);
X /= 10;
}
if (isNeg) *--BufPtr = '-'; // Add negative sign...
return std::string(BufPtr);
}
static inline std::string itostr(int X) {
if (X < 0)
return utostr((unsigned)-X, true);
else
return utostr((unsigned)X);
}
static inline std::string ftostr(double V) {
char Buffer[200];
snprintf(Buffer, 200, "%20.6e", V);
return Buffer;
}
#endif
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