SQLite4: Check-in [555cdfbf52]

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Overview

Comment:	Create sqlite4_num_isinf
Downloads:	Tarball \| ZIP archive \| SQL archive
Timelines:	family \| ancestors \| descendants \| both \| num_work
Files:	files \| file ages \| folders
SHA1:	555cdfbf52187fd7e01826a6d6e848a5259c9a4b
User & Date:	peterreid 2013-02-09 05:36:16

Context

2013-02-10
04:06		Add a few sqlite4_num tests. check-in: 6cc07d19e4 user: peterreid tags: num_work
2013-02-09
05:36		Create sqlite4_num_isinf check-in: 555cdfbf52 user: peterreid tags: num_work
05:35		Fix sqlite4_num_from_text in 0.000(many zeros)00123 case. check-in: 97728c04e8 user: peterreid tags: num_work

Changes

Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/math.c.

  r.sign = A.sign ^ B.sign;
  r.approx = A.approx | B.approx;
  if( r.approx==0 && A.m%B.m!=0 ) r.approx = 1;
  r.m = A.m/B.m;
  r.e = A.e - B.e;
  return r;
}








/*
** Test if A is NaN.
*/
int sqlite4_num_isnan(sqlite4_num A){
  return A.e>SQLITE4_MX_EXP && A.m==0; 
}








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  r.sign = A.sign ^ B.sign;
  r.approx = A.approx | B.approx;
  if( r.approx==0 && A.m%B.m!=0 ) r.approx = 1;
  r.m = A.m/B.m;
  r.e = A.e - B.e;
  return r;
}

/*
** Test if A is infinite.
*/
int sqlite4_num_isinf(sqlite4_num A){
  return A.e>SQLITE4_MX_EXP && A.m!=0;
}

/*
** Test if A is NaN.
*/
int sqlite4_num_isnan(sqlite4_num A){
  return A.e>SQLITE4_MX_EXP && A.m==0; 
}