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| author | Gregory Nutt <gnutt@nuttx.org> | 2015-01-26 13:55:49 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2015-01-26 13:55:49 -0600 |
| commit | c12007d0bb7aafb7f44efd131414dd7a88082468 (patch) | |
| tree | c1a7471215e5eee803073ed15360c509a64cc87a | |
| parent | b2a5143a51f471f61c1a967a9aceb765260e466b (diff) | |
| download | nuttx-c12007d0bb7aafb7f44efd131414dd7a88082468.tar.gz nuttx-c12007d0bb7aafb7f44efd131414dd7a88082468.tar.bz2 nuttx-c12007d0bb7aafb7f44efd131414dd7a88082468.zip | |
Add math library definition for isfinite. From Brennan Ashton.
| -rw-r--r-- | nuttx/include/nuttx/math.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/nuttx/include/nuttx/math.h b/nuttx/include/nuttx/math.h index 35369ba53..11b289ed5 100644 --- a/nuttx/include/nuttx/math.h +++ b/nuttx/include/nuttx/math.h @@ -89,12 +89,13 @@ /* General Constants ********************************************************/ -#define INFINITY (1.0/0.0) -#define NAN (0.0/0.0) -#define HUGE_VAL INFINITY +#define INFINITY (1.0/0.0) +#define NAN (0.0/0.0) +#define HUGE_VAL INFINITY -#define isnan(x) ((x) != (x)) -#define isinf(x) (((x) == INFINITY) || ((x) == -INFINITY)) +#define isnan(x) ((x) != (x)) +#define isinf(x) (((x) == INFINITY) || ((x) == -INFINITY)) +#define isfinite(x) (!(isinf(x)) && (x != NAN)) /* Exponential and Logarithmic constants ************************************/ |