https://community.intel.com/t5/Software-Archive/Representing-bad-data/m-p/937003#M16129 I'm looking for advice on representing bad data. <BR /> <BR />I am aware of the function ISNAN(), which returns .true. if the argument is an IEEE Not-a-Number. Is NaN a 'recommended' or sensible way of representing bad data? And what's the simplest way of setting a value to NaN without producing a run-time error? <BR /> <BR />Are there any potential issues I need to watch out for (e.g. reading and writing formatted data containing NaN)? Wed, 31 Jan 2001 20:18:44 GMT Intel_C_Intel 2001-01-31T20:18:44Z https://community.intel.com/t5/Software-Archive/Representing-bad-data/m-p/937003#M16129 I'm looking for advice on representing bad data. <BR /> <BR />I am aware of the function ISNAN(), which returns .true. if the argument is an IEEE Not-a-Number. Is NaN a 'recommended' or sensible way of representing bad data? And what's the simplest way of setting a value to NaN without producing a run-time error? <BR /> <BR />Are there any potential issues I need to watch out for (e.g. reading and writing formatted data containing NaN)? Wed, 31 Jan 2001 20:18:44 GMT https://community.intel.com/t5/Software-Archive/Representing-bad-data/m-p/937003#M16129 Intel_C_Intel 2001-01-31T20:18:44Z