add generated math tests

[libc-test] / src / math / util.h

diff --git a/src/math/util.h b/src/math/util.h
new file mode 100644 (file)
index 0000000..62630a8
--- /dev/null
+++ b/src/math/util.h
@@ -0,0 +1,69 @@
+#include <fenv.h>
+#include <float.h>
+#include <math.h>
+
+#undef RN
+#undef RZ
+#undef RD
+#undef RU
+#define RN FE_TONEAREST
+#define RZ FE_TOWARDZERO
+#define RD FE_DOWNWARD
+#define RU FE_UPWARD
+
+#undef INEXACT
+#undef INVALID
+#undef DIVBYZERO
+#undef UNDERFLOW
+#undef OVERFLOW
+#define INEXACT FE_INEXACT
+#define INVALID FE_INVALID
+#define DIVBYZERO FE_DIVBYZERO
+#define UNDERFLOW FE_UNDERFLOW
+#define OVERFLOW FE_OVERFLOW
+
+#undef inf
+#undef nan
+#define inf INFINITY
+#define nan NAN
+
+#define T(...) {__FILE__, __LINE__, __VA_ARGS__},
+
+#define POS char *file; int line;
+struct d_d {POS int r; double x; double y; float dy; int e; };
+struct f_f {POS int r; float x; float y; float dy; int e; };
+struct l_l {POS int r; long double x; long double y; float dy; int e; };
+struct ff_f {POS int r; float x; float x2; float y; float dy; int e; };
+struct dd_d {POS int r; double x; double x2; double y; float dy; int e; };
+struct ll_l {POS int r; long double x; long double x2; long double y; float dy; int e; };
+
+char *estr(int);
+char *rstr(int);
+int rconv(int *, char *);
+int econv(int *, char *);
+
+int eulp(double);
+int eulpf(float);
+int eulpl(long double);
+
+float ulperr(double got, double want, float dwant);
+float ulperrf(float got, float want, float dwant);
+float ulperrl(long double got, long double want, float dwant);
+
+void setupfenv(int);
+int getexcept(void);
+
+static int checkexcept(int got, int want, int r)
+{
+       if (r == RN)
+               return got == want || got == (want|INEXACT);
+       return 1; //(got|INEXACT|UNDERFLOW) == (want|INEXACT|UNDERFLOW);
+}
+
+static int checkulp(float d, int r)
+{
+       if (r == RN)
+               return fabsf(d) <= 1.0;
+       return 1; //fabsf(d) <= 2.0;
+}
+