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| author | Guido van Rossum <guido@python.org> | 1996-08-09 20:50:14 (GMT) |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 1996-08-09 20:50:14 (GMT) |
| commit | 86c04c252b9ec1cb682d9fd52bdd48b61434c4b3 (patch) | |
| tree | 6cb9a94fe8645637a8ae37a47f7b0d521923c15c /Objects/floatobject.c | |
| parent | 0693dd232ed861f5aacc2d97695c50bc6cdad3bc (diff) | |
| download | cpython-86c04c252b9ec1cb682d9fd52bdd48b61434c4b3.zip cpython-86c04c252b9ec1cb682d9fd52bdd48b61434c4b3.tar.gz cpython-86c04c252b9ec1cb682d9fd52bdd48b61434c4b3.tar.bz2 | |
Correct wrong calculation of pow(0.0, 0.0, negative_number)
Diffstat (limited to 'Objects/floatobject.c')
| -rw-r--r-- | Objects/floatobject.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/Objects/floatobject.c b/Objects/floatobject.c index 0a6aa48..74ef26e 100644 --- a/Objects/floatobject.c +++ b/Objects/floatobject.c @@ -367,12 +367,8 @@ float_pow(v, w, z) iw = ((floatobject *)w)->ob_fval; intw = (long)iw; if (iw == intw) { - errno = 0; - ix = powi(iv, intw); - } - else { /* Sort out special cases here instead of relying on pow() */ - if (iw == 0.0) { /* x**0 is 1, even 0**0 */ + if (intw == 0) { /* x**0 is 1, even 0**0 */ if ((object *)z!=None) { ix=fmod(1.0, z->ob_fval); if (ix!=0 && z->ob_fval<0) ix+=z->ob_fval; @@ -380,6 +376,11 @@ float_pow(v, w, z) else ix=1.0; return newfloatobject(ix); } + errno = 0; + ix = powi(iv, intw); + } + else { + /* Sort out special cases here instead of relying on pow() */ if (iv == 0.0) { if (iw < 0.0) { err_setstr(ValueError, "0.0 to a negative power"); |