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final attempt 

git-svn-id: svn+ssh://svn.cprover.org/srv/svn/cbmc/trunk@5380 6afb6bc1-c8e4-404c-8f48-9ae832c5b171
This commit is contained in:
kroening 2015-05-09 09:50:33 +00:00
parent 30f47ed188
commit c1da4057ff
1 changed files with 11 additions and 11 deletions
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22
regression/cbmc/Float-data-dependent-rounding/main.c
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@ -1,14 +1,18 @@
#include <assert.h>
#include <math.h>
#ifdef _MSC_VER
#include <float.h>
#define isnan(x) ((x)!=(x))
#if defined(_MSC_VER) && _MSC_VER < 1800
// don't have fenv.h
#else
#include <fenv.h>
#endif
int main (void) {
#if defined(_MSC_VER) && _MSC_VER < 1800
#else
#ifdef FE_UPWARD
#ifdef FW_DOWNWARD
float f;
float g;
@ -16,25 +20,21 @@ int main (void) {
__CPROVER_assume(!isnan(g));
if (f > g) {
#ifdef _MSC_VER
_controlfp(_RC_UP, _MCW_RC);
#else
fesetround(FE_UPWARD);
#endif
}
if (f < g) {
#ifdef _MSC_VER
_controlfp(_RC_DOWN, _MCW_RC);
#else
fesetround(FE_DOWNWARD);
#endif
}
if ((!isinf(f)) && (g > 0.0f)) {
float h = f + g;
assert(h >= f);
}
#endif
#endif
#endif
return 1;
}