summary refs log tree commit diff
path: root/math
diff options
context:
space:
mode:
authorAndrew Senkevich <andrew.senkevich@intel.com>2016-08-02 16:35:25 +0300
committerAndrew Senkevich <andrew.senkevich@intel.com>2016-08-02 16:35:25 +0300
commit533f9bebf969060e64c66681e275c03d6e49fcc9 (patch)
tree500694859540a9f7583760f1a99af70044ca726b /math
parentf88aab5d508c13ae4a88124e65773d7d827cd47b (diff)
downloadglibc-533f9bebf969060e64c66681e275c03d6e49fcc9.tar.gz
glibc-533f9bebf969060e64c66681e275c03d6e49fcc9.tar.xz
glibc-533f9bebf969060e64c66681e275c03d6e49fcc9.zip
x86_64: Call finite scalar versions in vectorized log, pow, exp (bz #20033).
Vector math functions require -ffast-math which sets -ffinite-math-only,
so it is needed to call finite scalar versions (which are called from
vector functions in some cases).

Since finite version of pow() returns qNaN instead of 1.0 for several
inputs, those inputs are excluded for tests of vector math functions.

    [BZ #20033]
    * sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S: Call
    finite version.
    * sysdeps/x86_64/fpu/multiarch/svml_d_exp4_core_avx2.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_d_exp8_core_avx512.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_d_log2_core_sse4.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_d_log4_core_avx2.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_d_pow2_core_sse4.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_d_pow4_core_avx2.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_d_pow8_core_avx512.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_expf4_core_sse4.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_expf8_core_avx2.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf4_core_sse4.S: Likewise.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf8_core_avx2.S: Likewise.
    * sysdeps/x86_64/fpu/svml_d_exp2_core.S: Likewise.
    * sysdeps/x86_64/fpu/svml_d_log2_core.S: Likewise.
    * sysdeps/x86_64/fpu/svml_d_pow2_core.S: Likewise.
    * sysdeps/x86_64/fpu/svml_s_expf4_core.S: Likewise.
    * sysdeps/x86_64/fpu/svml_s_logf4_core.S: Likewise.
    * sysdeps/x86_64/fpu/svml_s_powf4_core.S: Likewise.
    * math/libm-test.inc (pow_test_data): Exclude tests for qNaN
    in power zero.
Diffstat (limited to 'math')
-rw-r--r--math/libm-test.inc12
1 files changed, 8 insertions, 4 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 4ac7a0c80d..117057c315 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -179,6 +179,7 @@
 #define IGNORE_RESULT			0x20000
 #define NON_FINITE			0x40000
 #define TEST_SNAN			0x80000
+#define NO_TEST_MATHVEC			0x100000
 
 #define __CONCATX(a,b) __CONCAT(a,b)
 
@@ -1056,6 +1057,9 @@ enable_test (int exceptions)
     return 0;
   if (!SNAN_TESTS (FLOAT) && (exceptions & TEST_SNAN) != 0)
     return 0;
+  if (TEST_MATHVEC && (exceptions & NO_TEST_MATHVEC) != 0)
+    return 0;
+
   return 1;
 }
 
@@ -10631,10 +10635,10 @@ nexttoward_test (void)
 
 static const struct test_ff_f_data pow_test_data[] =
   {
-    TEST_ff_f (pow, qnan_value, 0, 1, ERRNO_UNCHANGED),
-    TEST_ff_f (pow, -qnan_value, 0, 1, ERRNO_UNCHANGED),
-    TEST_ff_f (pow, qnan_value, minus_zero, 1, ERRNO_UNCHANGED),
-    TEST_ff_f (pow, -qnan_value, minus_zero, 1, ERRNO_UNCHANGED),
+    TEST_ff_f (pow, qnan_value, 0, 1, ERRNO_UNCHANGED|NO_TEST_MATHVEC),
+    TEST_ff_f (pow, -qnan_value, 0, 1, ERRNO_UNCHANGED|NO_TEST_MATHVEC),
+    TEST_ff_f (pow, qnan_value, minus_zero, 1, ERRNO_UNCHANGED|NO_TEST_MATHVEC),
+    TEST_ff_f (pow, -qnan_value, minus_zero, 1, ERRNO_UNCHANGED|NO_TEST_MATHVEC),
 
     TEST_ff_f (pow, 1.1L, plus_infty, plus_infty, ERRNO_UNCHANGED|NO_TEST_INLINE),
     TEST_ff_f (pow, plus_infty, plus_infty, plus_infty, ERRNO_UNCHANGED|NO_TEST_INLINE),