diff options
| author | svn_bwardell <svn_bwardell@105869f7-3296-0410-a4ea-f4349344b45a> | 2011-08-07 12:41:50 +0000 |
|---|---|---|
| committer | svn_bwardell <svn_bwardell@105869f7-3296-0410-a4ea-f4349344b45a> | 2011-08-07 12:41:50 +0000 |
| commit | 96caf45931a90c080adc8073762d72aa2a80ac76 (patch) | |
| tree | 48ccb4894a0bdd3dbf62826e8c0e05641d1f4236 /src/vectors-4-default.h | |
| parent | 1d6878bcc13a1695043cb680f7ab83be28048419 (diff) | |
Fix definition of kifthen for architectures where blend instructions are not available.
git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/Vectors/trunk@20 105869f7-3296-0410-a4ea-f4349344b45a
Diffstat (limited to 'src/vectors-4-default.h')
| -rw-r--r-- | src/vectors-4-default.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/vectors-4-default.h b/src/vectors-4-default.h index b59db7c..6f66ff9 100644 --- a/src/vectors-4-default.h +++ b/src/vectors-4-default.h @@ -81,4 +81,11 @@ #define k4pow(x,a) (powf(x,a)) #define k4sqrt(x) (sqrtf(x)) -#define k4ifthen(x,y,z) ((x)>=0?(y):(z)) +#include <math.h> +#ifdef __cplusplus +#define SGN(x) std::signbit(x) +#else +#define SGN(x) signbit(x) +#endif + +#define k4ifthen(x,y,z) (SGN(x)?(z):(y)) |