diff options
Diffstat (limited to 'indra/llcommon/llsdutil.cpp')
| -rw-r--r-- | indra/llcommon/llsdutil.cpp | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/indra/llcommon/llsdutil.cpp b/indra/llcommon/llsdutil.cpp index f8f9ece058..803417d368 100644 --- a/indra/llcommon/llsdutil.cpp +++ b/indra/llcommon/llsdutil.cpp @@ -41,6 +41,7 @@ #include "llsdserialize.h" #include "stringize.h" +#include "is_approx_equal_fraction.h" #include <map> #include <set> @@ -571,7 +572,7 @@ std::string llsd_matches(const LLSD& prototype, const LLSD& data, const std::str return match_types(prototype.type(), TypeVector(), data.type(), pfx); } -bool llsd_equals(const LLSD& lhs, const LLSD& rhs) +bool llsd_equals(const LLSD& lhs, const LLSD& rhs, unsigned bits) { // We're comparing strict equality of LLSD representation rather than // performing any conversions. So if the types aren't equal, the LLSD @@ -588,6 +589,20 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs) // Both are TypeUndefined. There's nothing more to know. return true; + case LLSD::TypeReal: + // This is where the 'bits' argument comes in handy. If passed + // explicitly, it means to use is_approx_equal_fraction() to compare. + if (bits >= 0) + { + return is_approx_equal_fraction(lhs.asReal(), rhs.asReal(), bits); + } + // Otherwise we compare bit representations, and the usual caveats + // about comparing floating-point numbers apply. Omitting 'bits' when + // comparing Real values is only useful when we expect identical bit + // representation for a given Real value, e.g. for integer-valued + // Reals. + return (lhs.asReal() == rhs.asReal()); + #define COMPARE_SCALAR(type) \ case LLSD::Type##type: \ /* LLSD::URI has operator!=() but not operator==() */ \ @@ -596,10 +611,6 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs) COMPARE_SCALAR(Boolean); COMPARE_SCALAR(Integer); - // The usual caveats about comparing floating-point numbers apply. This is - // only useful when we expect identical bit representation for a given - // Real value, e.g. for integer-valued Reals. - COMPARE_SCALAR(Real); COMPARE_SCALAR(String); COMPARE_SCALAR(UUID); COMPARE_SCALAR(Date); @@ -617,7 +628,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs) for ( ; lai != laend && rai != raend; ++lai, ++rai) { // If any one array element is unequal, the arrays are unequal. - if (! llsd_equals(*lai, *rai)) + if (! llsd_equals(*lai, *rai, bits)) return false; } // Here we've reached the end of one or the other array. They're equal @@ -644,7 +655,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs) if (rhskeys.erase(lmi->first) != 1) return false; // Both maps have the current key. Compare values. - if (! llsd_equals(lmi->second, rhs[lmi->first])) + if (! llsd_equals(lmi->second, rhs[lmi->first], bits)) return false; } // We've now established that all the lhs keys have equal values in @@ -657,7 +668,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs) // We expect that every possible type() value is specifically handled // above. Failing to extend this switch to support a new LLSD type is // an error that must be brought to the coder's attention. - LL_ERRS("llsd_equals") << "llsd_equals(" << lhs << ", " << rhs << "): " + LL_ERRS("llsd_equals") << "llsd_equals(" << lhs << ", " << rhs << ", " << bits << "): " "unknown type " << lhs.type() << LL_ENDL; return false; // pacify the compiler } |