summaryrefslogtreecommitdiff
path: root/test/math
diff options
context:
space:
mode:
authorDenys Vlasenko <vda.linux@googlemail.com>2010-10-31 00:45:06 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2010-10-31 00:45:06 +0200
commite9807e243b454b06f279d7593abaeb74c73aef1e (patch)
treef78686c8bdd4e92e69232d10e5dd5452e9486c30 /test/math
parent4435b3ae24b6f76892b7c06c300687c23fab2729 (diff)
libm: fix remaining failures in test-float
These two failures are fixed: Failure: Test: ilogb (0.0) == FP_ILOGB0 plus exceptions allowed Failure: Test: ilogb (NaN) == FP_ILOGBNAN plus exceptions allowed Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'test/math')
-rw-r--r--test/math/Makefile.in3
-rw-r--r--test/math/ilogb.c51
2 files changed, 53 insertions, 1 deletions
diff --git a/test/math/Makefile.in b/test/math/Makefile.in
index e801112c6..9ceb6c6d5 100644
--- a/test/math/Makefile.in
+++ b/test/math/Makefile.in
@@ -1,7 +1,8 @@
# uClibc math tests
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
-TESTS := basic-test rint signgam tst-definitions test-fpucw test-float test-ifloat test-double test-idouble
+TESTS := basic-test tst-definitions test-fpucw test-float test-ifloat test-double test-idouble \
+ rint signgam ilogb
ifeq ($(UCLIBC_HAS_LONG_DOUBLE_MATH),y)
TESTS += test-ldouble test-ildoubl compile_test
else
diff --git a/test/math/ilogb.c b/test/math/ilogb.c
new file mode 100644
index 000000000..e439f8c37
--- /dev/null
+++ b/test/math/ilogb.c
@@ -0,0 +1,51 @@
+#include <math.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <limits.h>
+#include <stdio.h>
+
+#define check_d1(func, param, expected) \
+do { \
+ int err; hex_union ur; hex_union up; \
+ double result = func(param); up.f = param; ur.f = result; \
+ errors += (err = (result != (expected))); \
+ err \
+ ? printf("FAIL: %s(%g/"HEXFMT")=%g/"HEXFMT" (expected %g)\n", \
+ #func, (double)(param), (long long)up.hex, result, (long long)ur.hex, (double)(expected)) \
+ : printf("PASS: %s(%g)=%g\n", #func, (double)(param), result); \
+} while (0)
+
+#define check_i1(func, param, expected) \
+do { \
+ int err; hex_union up; \
+ long long result = func(param); up.f = param; \
+ errors += (err = (result != (expected))); \
+ err \
+ ? printf("FAIL: %s(%g/"HEXFMT")=%lld/%llu (expected %llu)\n", \
+ #func, (double)(param), (long long)up.hex, result, result, (long long)(expected)) \
+ : printf("PASS: %s(%g)=%lld/%llu\n", #func, (double)(param), result, result); \
+} while (0)
+
+#define HEXFMT "%08llx"
+typedef union {
+ double f;
+ uint64_t hex;
+} hex_union;
+
+double nan_value = 0.0;
+int errors = 0;
+
+int main(void)
+{
+ nan_value /= nan_value;
+
+ check_i1(ilogb, 0.0, FP_ILOGB0);
+ check_i1(ilogb, HUGE_VAL, INT_MAX);
+ check_i1(ilogb, nan_value, FP_ILOGBNAN);
+ check_i1(ilogbf, 0.0, FP_ILOGB0);
+ check_i1(ilogbf, HUGE_VALF, INT_MAX);
+ check_i1(ilogbf, nan_value, FP_ILOGBNAN);
+
+ printf("Errors: %d\n", errors);
+ return errors;
+}