| author | Aleksandar Samardžić <asamardzic@matf.bg.ac.rs> | 2012年09月22日 14:11:43 +0200 |
|---|---|---|
| committer | Aleksandar Samardžić <asamardzic@matf.bg.ac.rs> | 2012年09月22日 14:11:43 +0200 |
| commit | 5028e622b62303401c74d9aa0976e19ed2f6eb34 (patch) | |
| tree | a21d55edc6cee332b54785f877229fa7a0cbb3ff /lib/xmath.c | |
| parent | 02df692a94039d69fe0292ab05f5f596304333e5 (diff) | |
| download | libmatheval-5028e622b62303401c74d9aa0976e19ed2f6eb34.tar.gz | |
| -rw-r--r-- | lib/xmath.c | 6 |
diff --git a/lib/xmath.c b/lib/xmath.c index 1310b2f..1bd5f81 100644 --- a/lib/xmath.c +++ b/lib/xmath.c @@ -162,7 +162,7 @@ math_step(double x) /* * Calculate step function value. */ - return (x < 0) ? 0 : 1; + return MATH_ISNAN(x) ? x : ((x < 0) ? 0 : 1); } double @@ -171,7 +171,7 @@ math_delta(double x) /* * Calculate delta function value. */ - return (x == 0) ? MATH_INFINITY : 0; + return MATH_ISNAN(x) ? x : ((x == 0) ? MATH_INFINITY : 0); } double @@ -180,5 +180,5 @@ math_nandelta(double x) /* * Calculate modified delta function value. */ - return (x == 0) ? MATH_NAN : 0; + return MATH_ISNAN(x) ? x : ((x == 0) ? MATH_NAN : 0); } |