Thus for non-numbers that when coerced to numeric type result in a valid non-NaN numeric value (notably the empty string and boolean primitives, which when coerced give numeric values zero or one), the "false" returned value may be unexpected; the empty string, for example, is surely "not...
NaN 不能小于、等于或大于任何值,包括另一个 NaN。 当两个参数都不是 NaN 时,如果 x 和y 之间的指定排序关系为 true,则排序宏 isgreater、isgreaterequal、isless 和islessequal 将返回一个非零值。 如果其中一个或两个参数均为 NaN,或者排序关系为 false,则这些宏返回 0。 函数形式的行为方式相同,但返回...
In C++, theisnantemplate function returnstrueif the argumentxis a NaN; otherwise it returnsfalse. Remarks Because a NaN value doesn't compare as equal to itself or to any other NaN value, to detect one, you must use one of these functions or macros. A NaN is generated when the result...
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IEEE standards are well thought out, so I am sure there is a good reason why NaN comparing as equal to itself would be bad. I just can't figure out what it is. Edit: please refer to What is the rationale for all comparisons returning false for IEEE754 NaN values? as the authoritativ...
it is living on each it is long time not t it is my fate to meet it is no good doing s it is no use crying o it is not easy to be it is not easy to mas it is not equal to to it is not out of will it is not so hot as y it is not that it is now clear that it...
tf = isequaln(A1,A2,...,An) Description tf= isequaln(A,B)returns logical1(true) ifAandBare the same size and their contents are of equal value. Otherwise,isequalnreturns logical0(false). AllNaN(not a number) values are considered to be equal to each other.isequalnrecursively compare...
A1 = [1 NaN NaN]; A2 = [1 NaN NaN]; A3 = [1 NaN NaN]; 比较向量的相等性。 tf = isequaln(A1,A2,A3) tf =logical1 结果为逻辑值1(true),因为isequaln将 NaN 值视为彼此之间相等的值。 比较字符向量与字符串标量 在比较包含相同字符序列的字符向量和字符串标量时,即使大小和数据类型不同,...
tf = isequaln(A,B) tf = isequaln(A1,A2,...,An) 説明 tf= isequaln(A,B)は、AとBが同じサイズであり、その内容が等価である場合に logical1(true) を返します。そうでない場合、isequalnは logical0(false) を返します。NaN(Not a Number) 値はすべて互いに等しいものと見なされま...
He was executed as a public nuisance, not for claiming to be the Son of God. The empty tomb is a fiction – Jesus was not raised bodily from the dead. Belief in the resurrection is based on the visionary experiences of Paul, Peter and Mary Magdalene. ...