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- Small fixes to the scanf() family.

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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14938 87f5fb63-7c3d-0410-a384-fd976d0f7a62
This commit is contained in:
Olaf Barthel
2005-05-08 11:27:26 +00:00
parent 2548af2b4b
commit 89b568bcb8
7 changed files with 727 additions and 330 deletions
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74
library/math_fpclassify.c
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@@ -1,5 +1,5 @@
/*
* $Id: math_fpclassify.c,v 1.1 2005-05-08 08:51:29 obarthel Exp $
* $Id: math_fpclassify.c,v 1.2 2005-05-08 11:27:26 obarthel Exp $
*
* :ts=4
*
@@ -54,16 +54,44 @@ __fpclassify_float(float number)
x.value = number;
D(("number = 0x%08lx",x.raw[0]));
if((x.raw[0] & 0x7f800000) == 0x7f800000 && (x.raw[0] & 0x007fffff) != 0)
result = FP_NAN; /* Exponent = 255 and fraction != 0.0 -> not a number */
{
SHOWMSG("not a number");
/* Exponent = 255 and fraction != 0.0 -> not a number */
result = FP_NAN;
}
else if ((x.raw[0] & 0x7fffffff) == 0x7f800000)
result = FP_INFINITE; /* Exponent = 255 and fraction = 0.0 -> infinity */
{
SHOWMSG("infinity");
/* Exponent = 255 and fraction = 0.0 -> infinity */
result = FP_INFINITE;
}
else if (x.raw[0] == 0) /* ZZZ test against epsilon? */
result = FP_ZERO; /* Both exponent and fraction are zero -> zero */
{
SHOWMSG("zero");
/* Both exponent and fraction are zero -> zero */
result = FP_ZERO;
}
else if ((x.raw[0] & 0x7f800000) == 0)
result = FP_SUBNORMAL; /* Exponent = 0 -> subnormal */
{
SHOWMSG("subnormal");
/* Exponent = 0 -> subnormal (IEEE 754) */
result = FP_SUBNORMAL;
}
else
{
SHOWMSG("normal");
result = FP_NORMAL;
}
SHOWVALUE(result);
return(result);
}
@@ -78,16 +106,44 @@ __fpclassify_double(double number)
x.value = number;
D(("number = 0x%08lx%08lx",x.raw[0],x.raw[1]));
if(((x.raw[0] & 0x7ff00000) == 0x7ff00000) && ((x.raw[0] & 0x000fffff) != 0 || (x.raw[1] != 0)))
result = FP_NAN; /* Exponent = 2047 and fraction != 0.0 -> not a number */
{
SHOWMSG("not a number");
/* Exponent = 2047 and fraction != 0.0 -> not a number */
result = FP_NAN;
}
else if (((x.raw[0] & 0x7fffffff) == 0x7ff00000) && (x.raw[1] == 0))
result = FP_INFINITE; /* Exponent = 2047 and fraction = 0.0 -> infinity */
{
SHOWMSG("infinity");
/* Exponent = 2047 and fraction = 0.0 -> infinity */
result = FP_INFINITE;
}
else if (x.raw[0] == 0 && x.raw[1] == 0) /* ZZZ test against epsilon? */
result = FP_ZERO; /* Both exponent and fraction are zero -> zero */
{
SHOWMSG("zero");
/* Both exponent and fraction are zero -> zero */
result = FP_ZERO;
}
else if ((x.raw[0] & 0x7fff0000) == 0)
result = FP_SUBNORMAL; /* Exponent = 0 -> subnormal */
{
SHOWMSG("subnormal");
/* Exponent = 0 -> subnormal (IEEE 754) */
result = FP_SUBNORMAL;
}
else
{
SHOWMSG("normal");
result = FP_NORMAL;
}
SHOWVALUE(result);
return(result);
}