Changeset f08da1c in mainline for uspace/lib/c/generic/ieee_double.c

Timestamp:

2019-02-08T12:55:28Z (6 years ago)

Author:

Matthieu Riolo <matthieu.riolo@…>

Children:

d3c129d

Parents:

d64303b

git-author:

Matthieu Riolo <matthieu.riolo@…> (2019-01-26 09:21:29)

git-committer:

Matthieu Riolo <matthieu.riolo@…> (2019-02-08 12:55:28)

Message:

Ensures that the exponent is smallest possible value if 0.0

The old implementation used 1 - BIAS to display the number
0.0. This is not correct since this would indicate that
the hidden bit is available. Significant part 0 and
smallest possible value for the exponent indicates
0.0

File:

• uspace/lib/c/generic/ieee_double.c (modified) (1 diff)

uspace/lib/c/generic/ieee_double.c

@@ -92 +92 @@
                 if (ret.is_denormal) {
                         ret.pos_val.significand = raw_significand;
-                        ret.pos_val.exponent = 1 - exponent_bias;
+                        if (raw_significand == 0) {
+                                ret.pos_val.exponent = -exponent_bias;
+                        } else {
+                                ret.pos_val.exponent = 1 - exponent_bias;
+                        }
+
                         ret.is_accuracy_step = false;
                 } else {