summaryrefslogtreecommitdiff
path: root/tests/test-frexpl.c
diff options
context:
space:
mode:
Diffstat (limited to 'tests/test-frexpl.c')
-rw-r--r--tests/test-frexpl.c183
1 files changed, 19 insertions, 164 deletions
diff --git a/tests/test-frexpl.c b/tests/test-frexpl.c
index 8d9d41d..fc2a4de 100644
--- a/tests/test-frexpl.c
+++ b/tests/test-frexpl.c
@@ -1,5 +1,5 @@
/* Test of splitting a 'long double' into fraction and mantissa.
- Copyright (C) 2007-2010 Free Software Foundation, Inc.
+ Copyright (C) 2007-2015 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
@@ -27,6 +27,8 @@ SIGNATURE_CHECK (frexpl, long double, (long double, int *));
#include "fpucw.h"
#include "isnanl-nolibm.h"
+#include "minus-zero.h"
+#include "infinity.h"
#include "nan.h"
#include "macros.h"
@@ -35,6 +37,18 @@ SIGNATURE_CHECK (frexpl, long double, (long double, int *));
#undef exp
#define exp exponent
+#undef INFINITY
+#undef NAN
+
+#define DOUBLE long double
+#define VOLATILE
+#define ISNAN isnanl
+#define INFINITY Infinityl ()
+#define NAN NaNl ()
+#define L_(literal) literal##L
+#define MINUS_ZERO minus_zerol
+#define MAX_EXP LDBL_MAX_EXP
+#define MIN_EXP LDBL_MIN_EXP
/* On MIPS IRIX machines, LDBL_MIN_EXP is -1021, but the smallest reliable
exponent for 'long double' is -964. Similarly, on PowerPC machines,
LDBL_MIN_EXP is -1021, but the smallest reliable exponent for 'long double'
@@ -47,177 +61,18 @@ SIGNATURE_CHECK (frexpl, long double, (long double, int *));
#else
# define MIN_NORMAL_EXP LDBL_MIN_EXP
#endif
-
-/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
- So we use minus_zero instead.
- IRIX cc can't put -0.0L into .data, but can compute at runtime.
- Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
- platforms, such as when cross-compiling to PowerPC on MacOS X 10.5. */
-#if defined __hpux || defined __sgi
-static long double
-compute_minus_zero (void)
-{
- return -LDBL_MIN * LDBL_MIN;
-}
-# define minus_zero compute_minus_zero ()
-#else
-long double minus_zero = -0.0L;
-#endif
-
-static long double
-my_ldexp (long double x, int d)
-{
- for (; d > 0; d--)
- x *= 2.0L;
- for (; d < 0; d++)
- x *= 0.5L;
- return x;
-}
+#define FREXP frexpl
+#define RANDOM randoml
+#include "test-frexp.h"
int
main ()
{
- int i;
- long double x;
DECL_LONG_DOUBLE_ROUNDING
BEGIN_LONG_DOUBLE_ROUNDING ();
- { /* NaN. */
- int exp = -9999;
- long double mantissa;
- x = NaNl ();
- mantissa = frexpl (x, &exp);
- ASSERT (isnanl (mantissa));
- }
-
- { /* Positive infinity. */
- int exp = -9999;
- long double mantissa;
- x = 1.0L / 0.0L;
- mantissa = frexpl (x, &exp);
- ASSERT (mantissa == x);
- }
-
- { /* Negative infinity. */
- int exp = -9999;
- long double mantissa;
- x = -1.0L / 0.0L;
- mantissa = frexpl (x, &exp);
- ASSERT (mantissa == x);
- }
-
- { /* Positive zero. */
- int exp = -9999;
- long double mantissa;
- x = 0.0L;
- mantissa = frexpl (x, &exp);
- ASSERT (exp == 0);
- ASSERT (mantissa == x);
- ASSERT (!signbit (mantissa));
- }
-
- { /* Negative zero. */
- int exp = -9999;
- long double mantissa;
- x = minus_zero;
- mantissa = frexpl (x, &exp);
- ASSERT (exp == 0);
- ASSERT (mantissa == x);
- ASSERT (signbit (mantissa));
- }
-
- for (i = 1, x = 1.0L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.5L);
- }
- for (i = 1, x = 1.0L; i >= MIN_NORMAL_EXP; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.5L);
- }
- for (; i >= LDBL_MIN_EXP - 100 && x > 0.0L; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.5L);
- }
-
- for (i = 1, x = -1.0L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == -0.5L);
- }
- for (i = 1, x = -1.0L; i >= MIN_NORMAL_EXP; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == -0.5L);
- }
- for (; i >= LDBL_MIN_EXP - 100 && x < 0.0L; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == -0.5L);
- }
-
- for (i = 1, x = 1.01L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.505L);
- }
- for (i = 1, x = 1.01L; i >= MIN_NORMAL_EXP; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.505L);
- }
- for (; i >= LDBL_MIN_EXP - 100 && x > 0.0L; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa >= 0.5L);
- ASSERT (mantissa < 1.0L);
- ASSERT (mantissa == my_ldexp (x, - exp));
- }
-
- for (i = 1, x = 1.73205L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.866025L);
- }
- for (i = 1, x = 1.73205L; i >= MIN_NORMAL_EXP; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.866025L);
- }
- for (; i >= LDBL_MIN_EXP - 100 && x > 0.0L; i--, x *= 0.5L)
- {
- int exp = -9999;
- long double mantissa = frexpl (x, &exp);
- ASSERT (exp == i || exp == i + 1);
- ASSERT (mantissa >= 0.5L);
- ASSERT (mantissa < 1.0L);
- ASSERT (mantissa == my_ldexp (x, - exp));
- }
+ test_function ();
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 10:27:56 +0000