Fixup usage of MIN_EXP in libm-test.inc

Make MANT_DIG shadow the types *_MIN_EXP macro. Replace
calls sites with (MIN_EXP - 1), and simplify.

diff --git a/ChangeLog b/ChangeLog
index e44e504..f327aa8 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2016-05-24  Paul E. Murphy  <murphyp@linux.vnet.ibm.com>
 
+       * math/libm-test.inc (MIN_EXP): Directly define as
+       (DBL|LDBL|FLT)_MIN_EXP and fixup usage.
+
+2016-05-24  Paul E. Murphy  <murphyp@linux.vnet.ibm.com>
+
        * math/libm-test.inc (MANT_DIG): Directly define as
        (DBL|LDBL|FLT)_MANT_DIG and fixup usage.
 

diff --git a/math/libm-test.inc b/math/libm-test.inc
index cb8da8f..169be7e 100644 (file)
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -330,8 +330,8 @@ static FLOAT max_valid_error;
 
 #define MANT_DIG CHOOSE (LDBL_MANT_DIG, DBL_MANT_DIG, FLT_MANT_DIG,  \
                         LDBL_MANT_DIG, DBL_MANT_DIG, FLT_MANT_DIG)
-#define MIN_EXP CHOOSE ((LDBL_MIN_EXP-1), (DBL_MIN_EXP-1), (FLT_MIN_EXP-1),    \
-                       (LDBL_MIN_EXP-1), (DBL_MIN_EXP-1), (FLT_MIN_EXP-1))
+#define MIN_EXP CHOOSE (LDBL_MIN_EXP, DBL_MIN_EXP, FLT_MIN_EXP,        \
+                       LDBL_MIN_EXP, DBL_MIN_EXP, FLT_MIN_EXP)
 #define MAX_EXP CHOOSE (LDBL_MAX_EXP, DBL_MAX_EXP, FLT_MAX_EXP, \
                        LDBL_MAX_EXP, DBL_MAX_EXP, FLT_MAX_EXP)
 /* Sufficient numbers of digits to represent any floating-point value
@@ -753,7 +753,7 @@ ulp (FLOAT value)
        /* Fall through...  */
       case FP_SUBNORMAL:
         /* The next closest subnormal value is a constant distance away.  */
-       ulp = FUNC(ldexp) (1.0, MIN_EXP - MANT_DIG + 1);
+       ulp = FUNC(ldexp) (1.0, MIN_EXP - MANT_DIG);
        break;
 
       case FP_NORMAL:
@@ -7892,10 +7892,10 @@ static const struct test_f_i_data ilogb_test_data[] =
     TEST_f_i (ilogb, -0x1.ffffffffffffffp1L, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
 #endif
 
-    TEST_f_i (ilogb, min_subnorm_value, MIN_EXP-MANT_DIG+1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
-    TEST_f_i (ilogb, -min_subnorm_value, MIN_EXP-MANT_DIG+1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
-    TEST_f_i (ilogb, min_value, MIN_EXP, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
-    TEST_f_i (ilogb, -min_value, MIN_EXP, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_i (ilogb, min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_i (ilogb, -min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_i (ilogb, min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_i (ilogb, -min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
     TEST_f_i (ilogb, max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
     TEST_f_i (ilogb, -max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
 
@@ -9025,10 +9025,10 @@ static const struct test_f_f_data logb_test_data[] =
     TEST_f_f (logb, 1024, 10, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
     TEST_f_f (logb, -2000, 10, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
 
-    TEST_f_f (logb, min_subnorm_value, MIN_EXP-MANT_DIG+1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
-    TEST_f_f (logb, -min_subnorm_value, MIN_EXP-MANT_DIG+1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
-    TEST_f_f (logb, min_value, MIN_EXP, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
-    TEST_f_f (logb, -min_value, MIN_EXP, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_f (logb, min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_f (logb, -min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_f (logb, min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
+    TEST_f_f (logb, -min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
     TEST_f_f (logb, max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);
     TEST_f_f (logb, -max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED);