/* Test of splitting a float into fraction and mantissa.
- Copyright (C) 2007-2011 Free Software Foundation, Inc.
+ Copyright (C) 2007-2013 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
#undef exp
#define exp exponent
-static float
-my_ldexp (float x, int d)
-{
- for (; d > 0; d--)
- x *= 2.0f;
- for (; d < 0; d++)
- x *= 0.5f;
- return x;
-}
+#undef INFINITY
+#undef NAN
+
+#define DOUBLE float
+#define VOLATILE volatile
+#define ISNAN isnanf
+#define INFINITY Infinityf ()
+#define NAN NaNf ()
+#define L_(literal) literal##f
+#define MINUS_ZERO minus_zerof
+#define MAX_EXP FLT_MAX_EXP
+#define MIN_EXP FLT_MIN_EXP
+#define MIN_NORMAL_EXP FLT_MIN_EXP
+#define FREXP frexpf
+#define RANDOM randomf
+#include "test-frexp.h"
int
main ()
{
- int i;
- volatile float x;
-
- { /* NaN. */
- int exp = -9999;
- float mantissa;
- x = NaNf ();
- mantissa = frexpf (x, &exp);
- ASSERT (isnanf (mantissa));
- }
-
- { /* Positive infinity. */
- int exp = -9999;
- float mantissa;
- x = Infinityf ();
- mantissa = frexpf (x, &exp);
- ASSERT (mantissa == x);
- }
-
- { /* Negative infinity. */
- int exp = -9999;
- float mantissa;
- x = - Infinityf ();
- mantissa = frexpf (x, &exp);
- ASSERT (mantissa == x);
- }
-
- { /* Positive zero. */
- int exp = -9999;
- float mantissa;
- x = 0.0f;
- mantissa = frexpf (x, &exp);
- ASSERT (exp == 0);
- ASSERT (mantissa == x);
- ASSERT (!signbit (mantissa));
- }
-
- { /* Negative zero. */
- int exp = -9999;
- float mantissa;
- x = minus_zerof;
- mantissa = frexpf (x, &exp);
- ASSERT (exp == 0);
- ASSERT (mantissa == x);
- ASSERT (signbit (mantissa));
- }
-
- for (i = 1, x = 1.0f; i <= FLT_MAX_EXP; i++, x *= 2.0f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.5f);
- }
- for (i = 1, x = 1.0f; i >= FLT_MIN_EXP; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.5f);
- }
- for (; i >= FLT_MIN_EXP - 100 && x > 0.0f; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.5f);
- }
-
- for (i = 1, x = -1.0f; i <= FLT_MAX_EXP; i++, x *= 2.0f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == -0.5f);
- }
- for (i = 1, x = -1.0f; i >= FLT_MIN_EXP; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == -0.5f);
- }
- for (; i >= FLT_MIN_EXP - 100 && x < 0.0f; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == -0.5f);
- }
-
- for (i = 1, x = 1.01f; i <= FLT_MAX_EXP; i++, x *= 2.0f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.505f);
- }
- for (i = 1, x = 1.01f; i >= FLT_MIN_EXP; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.505f);
- }
- for (; i >= FLT_MIN_EXP - 100 && x > 0.0f; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa >= 0.5f);
- ASSERT (mantissa < 1.0f);
- ASSERT (mantissa == my_ldexp (x, - exp));
- }
-
- for (i = 1, x = 1.73205f; i <= FLT_MAX_EXP; i++, x *= 2.0f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.866025f);
- }
- for (i = 1, x = 1.73205f; i >= FLT_MIN_EXP; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i);
- ASSERT (mantissa == 0.866025f);
- }
- for (; i >= FLT_MIN_EXP - 100 && x > 0.0f; i--, x *= 0.5f)
- {
- int exp = -9999;
- float mantissa = frexpf (x, &exp);
- ASSERT (exp == i || exp == i + 1);
- ASSERT (mantissa >= 0.5f);
- ASSERT (mantissa < 1.0f);
- ASSERT (mantissa == my_ldexp (x, - exp));
- }
+ test_function ();
return 0;
}