mirrors/phobos
1
0
Fork 0
mirror of https://github.com/dlang/phobos.git synced 2025-05-02 08:00:48 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Fix Issue 20282 - CustomFloat.dig fails at some values.

Browse source
This commit is contained in:
Bernhard Seckinger 2019-10-17 15:44:41 +02:00
parent 1ed26be565
commit 072095ebea
1 changed files with 5 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

11
std/numeric.d
View file

@ -403,9 +403,8 @@ public:
/// Returns: number of decimal digits of precision /// Returns: number of decimal digits of precision
static @property size_t dig() static @property size_t dig()
{ {
auto shiftcnt = precision - ((flags&Flags.storeNormalized) != 0); auto shiftcnt = precision - ((flags&Flags.storeNormalized) == 0);
immutable x = (shiftcnt == 64) ? 0 : 1uL << shiftcnt; return shiftcnt == 64 ? 19 : cast(size_t) log10(1uL << shiftcnt);
return cast(size_t) log10(x);
} }
/// Returns: smallest increment to the value 1 /// Returns: smallest increment to the value 1
@ -746,10 +745,10 @@ public:
{ {
static assert(CustomFloat!(1, 6).dig == 0); static assert(CustomFloat!(1, 6).dig == 0);
static assert(CustomFloat!(9, 6).dig == 2); static assert(CustomFloat!(9, 6).dig == 2);
// static assert(CustomFloat!(10, 5).dig == 3); // doesn't work yet due to bug 20282 static assert(CustomFloat!(10, 5).dig == 3);
// static assert(CustomFloat!(10, 6, CustomFloatFlags.none).dig == 2); // doesn't work yet due to bug 20282 static assert(CustomFloat!(10, 6, CustomFloatFlags.none).dig == 2);
static assert(CustomFloat!(11, 5, CustomFloatFlags.none).dig == 3); static assert(CustomFloat!(11, 5, CustomFloatFlags.none).dig == 3);
// static assert(CustomFloat!(64, 7).dig == 19); // doesn't work yet due to bug 20282 static assert(CustomFloat!(64, 7).dig == 19);
} }
// testing .mant_dig // testing .mant_dig