static std::string toString(const APFloat &FP) {
static const size_t BufBytes = 128;
char buf[BufBytes];
if (FP.isNaN())
assert((FP.bitwiseIsEqual(APFloat::getQNaN(FP.getSemantics())) ||
FP.bitwiseIsEqual(
APFloat::getQNaN(FP.getSemantics(), /*Negative=*/true))) &&
"convertToHexString handles neither SNaN nor NaN payloads");
// Use C99's hexadecimal floating-point representation.
auto Written = FP.convertToHexString(
buf, /*hexDigits=*/0, /*upperCase=*/false, APFloat::rmNearestTiesToEven);
(void)Written;
assert(Written != 0);
assert(Written < BufBytes);
return buf;
}
static std::string toString(const APFloat &FP) {
// Print NaNs with custom payloads specially.
if (FP.isNaN() &&
!FP.bitwiseIsEqual(APFloat::getQNaN(FP.getSemantics())) &&
!FP.bitwiseIsEqual(APFloat::getQNaN(FP.getSemantics(), /*Negative=*/true))) {
APInt AI = FP.bitcastToAPInt();
return
std::string(AI.isNegative() ? "-" : "") + "nan:0x" +
utohexstr(AI.getZExtValue() &
(AI.getBitWidth() == 32 ? INT64_C(0x007fffff) :
INT64_C(0x000fffffffffffff)),
/*LowerCase=*/true);
}
// Use C99's hexadecimal floating-point representation.
static const size_t BufBytes = 128;
char buf[BufBytes];
auto Written = FP.convertToHexString(
buf, /*hexDigits=*/0, /*upperCase=*/false, APFloat::rmNearestTiesToEven);
(void)Written;
assert(Written != 0);
assert(Written < BufBytes);
return buf;
}