From 4435b3ae24b6f76892b7c06c300687c23fab2729 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Sat, 30 Oct 2010 23:45:41 +0200 Subject: libm: fix rint/scalb testcase failures These failures no longer happen: Failure: Test: scalb (2.0, 0.5) == NaN plus invalid exception Failure: Test: scalb (3.0, -2.5) == NaN plus invalid exception Failure: Test: rint (0.5) == 0.0 Failure: Test: rint (1.5) == 2.0 Failure: Test: rint (2.5) == 2.0 Failure: Test: rint (3.5) == 4.0 Failure: Test: rint (4.5) == 4.0 Failure: Test: rint (-0.5) == -0.0 Failure: Test: rint (-1.5) == -2.0 Failure: Test: rint (-2.5) == -2.0 Failure: Test: rint (-3.5) == -4.0 Failure: Test: rint (-4.5) == -4.0 Signed-off-by: Denys Vlasenko --- test/math/rint.c | 33 +++++++++++++++++++++++++++------ 1 file changed, 27 insertions(+), 6 deletions(-) (limited to 'test/math/rint.c') diff --git a/test/math/rint.c b/test/math/rint.c index 04c195385..c7bfab920 100644 --- a/test/math/rint.c +++ b/test/math/rint.c @@ -1,11 +1,32 @@ #include #include +#include #include -int main(void) { - double d1, d2; - d1 = 0.6; d2 = rint(d1); - printf("d1 = %f, d2 = %f\n", d1, d2); - return 0; -} +#define check_d1(func, param, expected) \ +do { \ + int err; hex_union ur; hex_union up; \ + up.f = param; ur.f = result = func(param); \ + errors += (err = (result != expected)); \ + err \ + ? printf("FAIL: %s(%g/"HEXFMT")=%g/"HEXFMT" (expected %g)\n", \ + #func, (param), (long long)up.hex, result, (long long)ur.hex, expected) \ + : printf("PASS: %s(%g)=%g\n", #func, (param), result); \ +} while (0) + +#define HEXFMT "%08llx" +typedef union { + double f; + uint64_t hex; +} hex_union; +double result; + +int errors = 0; +int main(void) +{ + check_d1(rint, 0.6, 1.0); + + printf("Errors: %d\n", errors); + return errors; +} -- cgit v1.2.3