#include "llvm/System/MappedFile.h"
#include "llvm/ADT/StringExtras.h"
#include <cmath>
+#include <cstring>
+#include <cctype>
using namespace llvm;
static bool isNumberChar(char C) {
std::string *ErrorMsg) {
char *F1NumEnd, *F2NumEnd;
double V1 = 0.0, V2 = 0.0;
+
+ // If one of the positions is at a space and the other isn't, chomp up 'til
+ // the end of the space.
+ while (isspace(*F1P) && F1P != F1End)
+ ++F1P;
+ while (isspace(*F2P) && F2P != F2End)
+ ++F2P;
+
// If we stop on numbers, compare their difference.
if (isNumberChar(*F1P) && isNumberChar(*F2P)) {
V1 = strtod(F1P, &F1NumEnd);
// Okay, now that we opened the files, scan them for the first difference.
char *File1Start = F1.charBase();
char *File2Start = F2.charBase();
- char *File1End = File1Start+F1.size();
- char *File2End = File2Start+F2.size();
+ char *File1End = File1Start+A_size;
+ char *File2End = File2Start+B_size;
char *F1P = File1Start;
char *F2P = File2Start;
if (A_size == B_size) {
- // Scan for the end of file or first difference.
- while (F1P < File1End && *F1P == *F2P)
- ++F1P, ++F2P;
-
- // Common case: identifical files.
- if (F1P == File1End)
- return 0; // Scanned to end, files same
+ // Are the buffers identical?
+ if (std::memcmp(File1Start, File2Start, A_size) == 0)
+ return 0;
if (AbsTol == 0 && RelTol == 0)
return 1; // Files different!