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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/math/nearbyint.c | |
Initial version
Diffstat (limited to 'src/math/nearbyint.c')
| -rw-r--r-- | src/math/nearbyint.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/math/nearbyint.c b/src/math/nearbyint.c new file mode 100644 index 0000000..f4e8aac --- /dev/null +++ b/src/math/nearbyint.c @@ -0,0 +1,20 @@ +#include <fenv.h> +#include <math.h> + +/* nearbyint is the same as rint, but it must not raise the inexact exception */ + +double nearbyint(double x) +{ +#ifdef FE_INEXACT + #pragma STDC FENV_ACCESS ON + int e; + + e = fetestexcept(FE_INEXACT); +#endif + x = rint(x); +#ifdef FE_INEXACT + if (!e) + feclearexcept(FE_INEXACT); +#endif + return x; +} |