Re: Whitespace after minus sign in mpz_set_str

[Torbjörn Granlund]

Marc Glisse  writes:

  This was also discussed in
  https://gmplib.org/list-archives/gmp-bugs/2013-December/003257.html

  I don't know if anything changed...

Probably not.  This spacey "feature" is not expected to be widely used.

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Re: Whitespace after minus sign in mpz_set_str

[Marc Glisse]

On Sun, 7 May 2023, Fredrik Johansson wrote:


Dear GMP developers,

According to the documentation for mpz_set_str, "White space is allowed in
the string, and is simply ignored". Indeed,

   mpz_set_str(x, "-12 3", 10)

works.

However, mpz_set_str returns that the string is invalid when a space
appears between the minus sign and the first digit. For example,

   mpz_set_str(x, "- 123", 10)

does not work.


This was also discussed in 
https://gmplib.org/list-archives/gmp-bugs/2013-December/003257.html


I don't know if anything changed...

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Marc Glisse
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Re: Whitespace after minus sign in mpz_set_str

[Vincent Lefevre]

On 2023-05-07 15:37:12 +0200, Fredrik Johansson wrote:
> However, mpz_set_str returns that the string is invalid when a space
> appears between the minus sign and the first digit. For example,
> 
> mpz_set_str(x, "- 123", 10)
> 
> does not work.

According to the GMP code (mpz/set_str.c), whitespace in the prefixes
0x/0X/0b/0B is not handled either.

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