X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Filogb.c;fp=src%2Fmath%2Filogb.c;h=c0915a101468a1057dd36b1177249d43d9007739;hb=2146d5e12aa52cb97f0a151e2611967f0653a07a;hp=0000000000000000000000000000000000000000;hpb=6267890b2c3641c5103e388ca374b5ef5ee78c99;p=libc-test

diff --git a/src/math/ilogb.c b/src/math/ilogb.c
new file mode 100644
index 0000000..c0915a1
--- /dev/null
+++ b/src/math/ilogb.c
@@ -0,0 +1,41 @@
+#include <stdint.h>
+#include <stdio.h>
+#include "util.h"
+
+static struct d_i t[] = {
+#include "sanity/ilogb.h"
+
+};
+
+int main(void)
+{
+	#pragma STDC FENV_ACCESS ON
+	int yi;
+	float d;
+	int e, i, err = 0;
+	struct d_i *p;
+
+	for (i = 0; i < sizeof t/sizeof *t; i++) {
+		p = t + i;
+
+		if (p->r < 0)
+			continue;
+		fesetround(p->r);
+		feclearexcept(FE_ALL_EXCEPT);
+		yi = ilogb(p->x);
+		e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
+
+		if (!checkexcept(e, p->e, p->r)) {
+			printf("%s:%d: bad fp exception: %s ilogb(%a)=%lld, want %s",
+				p->file, p->line, rstr(p->r), p->x, p->i, estr(p->e));
+			printf(" got %s\n", estr(e));
+			err++;
+		}
+		if (yi != p->i) {
+			printf("%s:%d: %s ilogb(%a) want %lld got %d\n",
+				p->file, p->line, rstr(p->r), p->x, p->i, yi);
+			err++;
+		}
+	}
+	return !!err;
+}