PureBasic Forums - English

Posted: **Wed Oct 03, 2012 3:23 pm**

hi,

can you plese tell me what the range of double is - for example like "8 bytes Real numbers with an approximate range of 4.19E-307 to 1.67E+308"

thanx

Posted: **Wed Oct 03, 2012 3:39 pm**

the highest storable double is: ± 1.7976931348623157e308
the lowes positive double is: 2.2250738585072013e-308

Posted: **Sat Jan 07, 2017 1:47 am**

it seems the maximum for Double might be slightly understated in the PB docs?

In C:

Code: Select all

printf("%f", DBL_MAX);
179769313486231570000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.000000
                ^

In PB, using the docs suggested max yields a slightly lower figure:

Code: Select all

dbl.d = 1.7976931348623157e+308 :  Debug StrD(dbl)
179769313486231550000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
                ^

But if i change that from "157e+" to "158e+" the output then matches that of the C output:

Code: Select all

dbl.d = 1.7976931348623158e+308 :  Debug StrD(dbl)
179769313486231570000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
                ^

PureBasic Forums - English

Range of double numbers?

Range of double numbers?

Re: Range of double numbers?

Re: Range of double numbers?