diff options
| -rw-r--r-- | ChangeLog | 18 | ||||
| -rw-r--r-- | modules/modf-tests | 3 | ||||
| -rw-r--r-- | modules/modff-tests | 3 | ||||
| -rw-r--r-- | modules/modfl-tests | 4 | ||||
| -rw-r--r-- | tests/test-modf.c | 13 | ||||
| -rw-r--r-- | tests/test-modf.h | 62 | ||||
| -rw-r--r-- | tests/test-modff.c | 13 | ||||
| -rw-r--r-- | tests/test-modfl.c | 13 |
8 files changed, 120 insertions, 9 deletions
@@ -1,5 +1,23 @@ 2012-03-03 Bruno Haible <bruno@clisp.org> + modf* tests: More tests. + * tests/test-modf.h: New file. + * tests/test-modf.c: Include <float.h> and test-modf.h. + (main): Invoke test_function. + * tests/test-modff.c: Include <float.h> and test-modf.h. + (main): Invoke test_function. + * tests/test-modfl.c: Include <float.h> and test-modf.h. + (main): Invoke test_function. + * modules/modf-tests (Files): Add tests/test-modf.h, tests/randomd.c. + (Makefile.am): Add randomd.c to test_modf_SOURCES. + * modules/modff-tests (Files): Add tests/test-modf.h, tests/randomf.c. + (Makefile.am): Add randomf.c to test_modff_SOURCES. + * modules/modfl-tests (Files): Add tests/test-modf.h, tests/randoml.c. + (Depends-on): Add 'float'. + (Makefile.am): Add randoml.c to test_modfl_SOURCES. + +2012-03-03 Bruno Haible <bruno@clisp.org> + fabs* tests: More tests. * tests/test-fabs.h: New file, partially extracted from tests/test-fabsl.c. diff --git a/modules/modf-tests b/modules/modf-tests index 24e483df82..f087eb2ee4 100644 --- a/modules/modf-tests +++ b/modules/modf-tests @@ -1,7 +1,9 @@ Files: tests/test-modf.c +tests/test-modf.h tests/signature.h tests/macros.h +tests/randomd.c Depends-on: @@ -10,4 +12,5 @@ configure.ac: Makefile.am: TESTS += test-modf check_PROGRAMS += test-modf +test_modf_SOURCES = test-modf.c randomd.c test_modf_LDADD = $(LDADD) @MODF_LIBM@ diff --git a/modules/modff-tests b/modules/modff-tests index 9d35b7321b..6675c40b2c 100644 --- a/modules/modff-tests +++ b/modules/modff-tests @@ -1,7 +1,9 @@ Files: tests/test-modff.c +tests/test-modf.h tests/signature.h tests/macros.h +tests/randomf.c Depends-on: @@ -10,4 +12,5 @@ configure.ac: Makefile.am: TESTS += test-modff check_PROGRAMS += test-modff +test_modff_SOURCES = test-modff.c randomf.c test_modff_LDADD = $(LDADD) @MODFF_LIBM@ diff --git a/modules/modfl-tests b/modules/modfl-tests index a3e893acde..059d22c73d 100644 --- a/modules/modfl-tests +++ b/modules/modfl-tests @@ -1,14 +1,18 @@ Files: tests/test-modfl.c +tests/test-modf.h tests/signature.h tests/macros.h +tests/randoml.c Depends-on: fpucw +float configure.ac: Makefile.am: TESTS += test-modfl check_PROGRAMS += test-modfl +test_modfl_SOURCES = test-modfl.c randoml.c test_modfl_LDADD = $(LDADD) @MODFL_LIBM@ diff --git a/tests/test-modf.c b/tests/test-modf.c index 4f3b630e6a..d1cb14efd4 100644 --- a/tests/test-modf.c +++ b/tests/test-modf.c @@ -23,11 +23,16 @@ #include "signature.h" SIGNATURE_CHECK (modf, double, (double, double *)); +#include <float.h> + #include "macros.h" -volatile double x; -double y; -double z; +#define DOUBLE double +#define L_(literal) literal +#define MANT_DIG DBL_MANT_DIG +#define MODF modf +#define RANDOM randomd +#include "test-modf.h" int main () @@ -44,5 +49,7 @@ main () ASSERT (y >= -0.972406761 && y <= -0.972406759); ASSERT (z == -5.0); + test_function (); + return 0; } diff --git a/tests/test-modf.h b/tests/test-modf.h new file mode 100644 index 0000000000..cb022354b5 --- /dev/null +++ b/tests/test-modf.h @@ -0,0 +1,62 @@ +/* Test of modf*() function family. + Copyright (C) 2012 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +static void +test_function (void) +{ + int i; + const DOUBLE TWO_MANT_DIG = + /* Assume MANT_DIG <= 5 * 31. + Use the identity + n = floor(n/5) + floor((n+1)/5) + ... + floor((n+4)/5). */ + (DOUBLE) (1U << ((MANT_DIG - 1) / 5)) + * (DOUBLE) (1U << ((MANT_DIG - 1 + 1) / 5)) + * (DOUBLE) (1U << ((MANT_DIG - 1 + 2) / 5)) + * (DOUBLE) (1U << ((MANT_DIG - 1 + 3) / 5)) + * (DOUBLE) (1U << ((MANT_DIG - 1 + 4) / 5)); + + /* Randomized tests. */ + for (i = 0; i < SIZEOF (RANDOM); i++) + { + DOUBLE x = RANDOM[i]; /* 0.0 <= x < 1.0 */ + DOUBLE y; + DOUBLE z; + + y = MODF (x, &z); + ASSERT (z == L_(0.0)); + ASSERT (y == x); + + y = MODF (- x, &z); + ASSERT (z == L_(0.0)); + ASSERT (y == - x); + + y = MODF (L_(1.0) + x, &z); + ASSERT (z == L_(1.0)); + y -= x; + ASSERT (y >= - L_(1.0) / TWO_MANT_DIG); + ASSERT (y <= L_(1.0) / TWO_MANT_DIG); + + y = MODF (- L_(1.0) - x, &z); + ASSERT (z == - L_(1.0)); + y -= - x; + ASSERT (y >= - L_(1.0) / TWO_MANT_DIG); + ASSERT (y <= L_(1.0) / TWO_MANT_DIG); + } +} + +volatile DOUBLE x; +DOUBLE y; +DOUBLE z; diff --git a/tests/test-modff.c b/tests/test-modff.c index 42fd83fd40..295ba3d6bf 100644 --- a/tests/test-modff.c +++ b/tests/test-modff.c @@ -23,11 +23,16 @@ #include "signature.h" SIGNATURE_CHECK (modff, float, (float, float *)); +#include <float.h> + #include "macros.h" -volatile float x; -float y; -float z; +#define DOUBLE float +#define L_(literal) literal##f +#define MANT_DIG FLT_MANT_DIG +#define MODF modff +#define RANDOM randomf +#include "test-modf.h" int main () @@ -44,5 +49,7 @@ main () ASSERT (y >= -0.972408f && y <= -0.972406f); ASSERT (z == -5.0f); + test_function (); + return 0; } diff --git a/tests/test-modfl.c b/tests/test-modfl.c index caffdf5b9e..31b7d5c4a4 100644 --- a/tests/test-modfl.c +++ b/tests/test-modfl.c @@ -23,12 +23,17 @@ #include "signature.h" SIGNATURE_CHECK (modfl, long double, (long double, long double *)); +#include <float.h> + #include "fpucw.h" #include "macros.h" -volatile long double x; -long double y; -long double z; +#define DOUBLE long double +#define L_(literal) literal##L +#define MANT_DIG LDBL_MANT_DIG +#define MODF modfl +#define RANDOM randoml +#include "test-modf.h" int main () @@ -49,5 +54,7 @@ main () ASSERT (y >= -0.972406761L && y <= -0.972406759L); ASSERT (z == -5.0L); + test_function (); + return 0; } |