Invalid suffix to floating constant

[skg]

Hi,
I'm writing a c++ code, where in i'm passing a double value to a
function.
What i'm sending is a double value in scientific mode

say
set_value (1234e5.6)

G++ compiler cribs about invalid suffix .6 to floating constant.

I'm using g++-3.4.2

If i'm doing wrong, then what is the correct way of sending double
value in scientific mode.

Thanks,
Surya

 

[Edernity]

yeah, what is the . 6
if you want to send 1234000 use
set_value(1.234e6) or such
Edernity

 

[Rolf Magnus]

Hi,
I'm writing a c++ code, where in i'm passing a double value to a
function.
What i'm sending is a double value in scientific mode

say
set_value (1234e5.6)

G++ compiler cribs about invalid suffix .6 to floating constant.

You can't have fractional exponents. Maybe you meant 1234.6e5 instead?

 

[wittempj]

in scientific notation you set the dot before the 'e' e.g 1.23456e5 =
123456

 

[Kurt Stutsman]

You can't have fractional exponents. Maybe you meant 1234.6e5 instead?

However if you really want 1234**5.6, you can do it by realizing that the
value is the same as 1234 * 10**5.6. So you could do 1234 * pow(10, 5.6);

 

[Ben Hutchings]

Hi,
I'm writing a c++ code, where in i'm passing a double value to a
function.
What i'm sending is a double value in scientific mode

say
set_value (1234e5.6)

What is that supposed to mean?

If you mean 1234 * 10 ^ 5.6, you can't write that as a literal;
you will have to use 1234.0 * pow(10.0, 5.6).

If you mean 1234.6 * 10 ^ 5, write 1234.6e5.

G++ compiler cribs about invalid suffix .6 to floating constant.

I'm using g++-3.4.2

If i'm doing wrong, then what is the correct way of sending double
value in scientific mode.

Any of the following forms:

digit+ '.' digit* [('e' | 'E') [sign] digit+]
digit+ ('e' | 'E') [sign] digit+
'.' digit+ [('e' | 'E') [sign] digit+]

(these are written using EBNF <http://en.wikipedia.org/wiki/EBNF>).

 

[Mark Van Peteghem]

Hi,
I'm writing a c++ code, where in i'm passing a double value to a
function.
What i'm sending is a double value in scientific mode

say
set_value (1234e5.6)

G++ compiler cribs about invalid suffix .6 to floating constant.

It should be 1234.6e5
You can't have a dot in the exponent.

 

[ThosRTanner]

Don't you mean 1234.5e6?