diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/math/Makefile.in | 3 | ||||
| -rw-r--r-- | test/math/ilogb.c | 51 |
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; +} |