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Cleaner, more general exponent output.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42690 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Neil Booth 2007-10-06 07:29:25 +00:00
parent a11ef82207
commit 92f7e8d925
1 changed files with 24 additions and 23 deletions
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47
lib/Support/APFloat.cpp
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@ -252,32 +252,33 @@ namespace {
return result; return result;
} }
/* Write out a decimal exponent. */ /* Write out an unsigned decimal integer. */
static char * static char *
writeDecimalExponent (char *dst, int exponent) writeUnsignedDecimal (char *dst, unsigned int n)
{ {
assert (exponent >= -65536 && exponent <= 65535); char buff[40], *p;
if (exponent < 0) { p = buff;
do
*p++ = '0' + n % 10;
while (n /= 10);
do
*dst++ = *--p;
while (p != buff);
return dst;
}
/* Write out a signed decimal integer. */
static char *
writeSignedDecimal (char *dst, int value)
{
if (value < 0) {
*dst++ = '-'; *dst++ = '-';
exponent = -exponent; dst = writeUnsignedDecimal(dst, -(unsigned) value);
} } else
dst = writeUnsignedDecimal(dst, value);
if (exponent == 0) {
*dst++ = '0';
} else {
char buff[12], *p;
p = buff;
while (exponent) {
*p++ = '0' + exponent % 10;
exponent /= 10;
}
do
*dst++ = *--p;
while (p != buff);
}
return dst; return dst;
} }
@ -1865,7 +1866,7 @@ APFloat::convertNormalToHexString(char *dst, unsigned int hexDigits,
/* Finally output the exponent. */ /* Finally output the exponent. */
*dst++ = upperCase ? 'P': 'p'; *dst++ = upperCase ? 'P': 'p';
return writeDecimalExponent (dst, exponent); return writeSignedDecimal (dst, exponent);
} }
// For good performance it is desirable for different APFloats // For good performance it is desirable for different APFloats