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- fpclassify() now returns FP_ZERO both for 0 and -0.

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- nan() and nanf() now return quiet NaNs.

- Added internal __inf() and __inff() functions.

- strtof() now calls nanf() and __inff(), respectively, to produce
  the special floating point values for nan/inf/infinity.

- strtod() now calls nan() and __inf(), respectively, to produce
  the special floating point values for nan/inf/infinity.

- The scanf() family now calls nan() and __inf(), respectively, to
  produce the special floating point values for nan/inf/infinity.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14948 87f5fb63-7c3d-0410-a384-fd976d0f7a62
This commit is contained in:
Olaf Barthel
2005-05-14 10:52:31 +00:00
parent feb29fa334
commit fa31c468dc
13 changed files with 178 additions and 62 deletions
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18
library/stdlib_strtod.c
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@ -1,5 +1,5 @@
/*
* $Id: stdlib_strtod.c,v 1.6 2005-05-08 11:27:26 obarthel Exp $
* $Id: stdlib_strtod.c,v 1.7 2005-05-14 10:52:31 obarthel Exp $
*
* :ts=4
*
@ -123,22 +123,14 @@ strtod(const char *str, char ** ptr)
/* We begin by checking for the "inf" and "nan" strings. */
if(strcasecmp(str,"inf") == SAME || strcasecmp(str,"infinity") == SAME)
{
union ieee_double x;
SHOWMSG("infinity");
str += strlen(str);
/* Exponent = 2047 and fraction = 0.0 */
x.raw[0] = 0x7ff00000;
x.raw[1] = 0x00000000;
sum = x.value;
sum = __inf();
}
else if (strncasecmp(str,"nan",3) == SAME && (str[3] == '(' || str[3] == '\0'))
{
union ieee_double x;
SHOWMSG("not a number");
str += 3;
@ -153,11 +145,7 @@ strtod(const char *str, char ** ptr)
str++;
}
/* Exponent = 2047 and fraction != 0.0 */
x.raw[0] = 0x7ff00000;
x.raw[1] = 0x00000001;
sum = x.value;
sum = nan(NULL);
}
else
{