Mercurial > octave

comparison libinterp/octave-value/ov.cc @ 30860:fc045a84cb33

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maint: Merge stable to default.
author Markus Mützel <markus.muetzel@gmx.de>
date Wed, 23 Mar 2022 18:28:24 +0100
parents 1be26e9c07e3 df26decca96b
children 79edd49a5a97
comparison
equal deleted inserted replaced
30858:820466e45a93 30860:fc045a84cb33
3248 3248
3249 static const UT max_val = std::numeric_limits<UT>::max (); 3249 static const UT max_val = std::numeric_limits<UT>::max ();
3250 3250
3251 double abs_increment = std::abs (increment); 3251 double abs_increment = std::abs (increment);
3252 3252
3253 if (abs_increment > max_val) 3253 // Technically, this condition should be `abs_increment > max_val`.
3254 // But intmax('uint64') is not representable exactly as floating point
3255 // number. Instead, it "rounds" up by 1 to 2^64. To account for
3256 // this, use the following expression which works for all unsigned
3257 // integer types.
3258 if ((abs_increment-1.) >= max_val)
3254 return 1; 3259 return 1;
3255 3260
3256 UT unsigned_increment = range_increment<T> (increment); 3261 UT unsigned_increment = range_increment<T> (increment);
3257
3258 // If the increment wasn't zero before but it is now, the cast to UT
3259 // wrapped around. The range can only have one value.
3260 if (unsigned_increment == 0)
3261 return 1;
3262 3262
3263 return range_numel_aux (base, unsigned_increment, limit); 3263 return range_numel_aux (base, unsigned_increment, limit);
3264 } 3264 }
3265 3265
3266 // Make a range from integer values. Increment may be integer or double. 3266 // Make a range from integer values. Increment may be integer or double.