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Have magnitude preserve single-precision-ness.

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Found using random testing.
This commit is contained in:
Vincent St-Amour 2015-11-03 18:18:08 -06:00
parent 827fc45598
commit 86f19474ca
2 changed files with 18 additions and 0 deletions
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3
pkgs/racket-test-core/tests/racket/number.rktl
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@ -1607,6 +1607,9 @@
(test +inf.0 magnitude 0.0+inf.0i)
(test +nan.0 magnitude +nan.0+inf.0i)
(test +nan.0 magnitude +inf.0+nan.0i)
(test +inf.f magnitude 3.0f0-inf.fi)
(test +nan.f magnitude 3.0f0+nan.fi)
(test 3.0f0 magnitude 3.0f0+0.0f0i)
(test 0 angle 1)
(test 0 angle 1.0)

15
racket/src/racket/src/number.c
View File

@ -3804,6 +3804,21 @@ static Scheme_Object *magnitude(int argc, Scheme_Object *argv[])
a[0] = i;
return scheme_exact_to_inexact(1, a);
}
#ifdef MZ_USE_SINGLE_FLOATS
if (SCHEME_FLTP(i)) {
float f;
f = SCHEME_FLT_VAL(i);
if (MZ_IS_POS_INFINITY((double) f)) {
if (SCHEME_FLTP(r)) { /* `r` is either a single-precision float or exact 0 */
f = SCHEME_FLT_VAL(r);
if (MZ_IS_NAN((double) f)) {
return scheme_single_nan_object;
}
return scheme_single_inf_object;
}
}
}
#endif
if (SCHEME_FLOATP(i)) {
double d;
d = SCHEME_FLOAT_VAL(i);