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Modify APFloat to take a StringRef instead of a c string.

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This also adds unit tests to APFloat that mainly tests the
string handling of APFloat, but not much else of it's api.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79210 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Erick Tryzelaar
2009-08-16 23:36:19 +00:00
parent 1b9104ff80
commit a15d890c34
3 changed files with 217 additions and 67 deletions
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9
include/llvm/ADT/APFloat.h
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@@ -109,6 +109,7 @@ namespace llvm {
typedef signed short exponent_t;
struct fltSemantics;
struct StringRef;
/* When bits of a floating point number are truncated, this enum is
used to indicate what fraction of the LSB those bits represented.
@@ -172,7 +173,7 @@ namespace llvm {
};
// Constructors.
APFloat(const fltSemantics &, const char *);
APFloat(const fltSemantics &, const StringRef &);
APFloat(const fltSemantics &, integerPart);
APFloat(const fltSemantics &, fltCategory, bool negative, unsigned type=0);
explicit APFloat(double d);
@@ -234,7 +235,7 @@ namespace llvm {
bool, roundingMode);
opStatus convertFromZeroExtendedInteger(const integerPart *, unsigned int,
bool, roundingMode);
opStatus convertFromString(const char *, roundingMode);
opStatus convertFromString(const StringRef&, roundingMode);
APInt bitcastToAPInt() const;
double convertToDouble() const;
float convertToFloat() const;
@@ -312,8 +313,8 @@ namespace llvm {
roundingMode, bool *) const;
opStatus convertFromUnsignedParts(const integerPart *, unsigned int,
roundingMode);
opStatus convertFromHexadecimalString(const char *, roundingMode);
opStatus convertFromDecimalString (const char *, roundingMode);
opStatus convertFromHexadecimalString(const StringRef&, roundingMode);
opStatus convertFromDecimalString (const StringRef&, roundingMode);
char *convertNormalToHexString(char *, unsigned int, bool,
roundingMode) const;
opStatus roundSignificandWithExponent(const integerPart *, unsigned int,