floating-point promotion : stroustrup vs compiler - who is right?

Question

In section 10.5.1 of Stroustrup\'s new book \"The C++ Programming Language - Fourth Edition\" he says, that before an arithmetic operation is performed, integral promotion is us

Answer 1

In the meantime Stroustrup seems to recognised the refer sentence is not correct or at least misleading. He has removed the sentence, about the floating-point promotion, from section 10.5.1.

Please see errata of 3rd printing of 4th edition on Stroustrup's web page:

pg 267: s/Similarly, floating-point promotion is used to create doubles out of floats//

(Remark: The expression s/regexp/replacement/ is similar to sed unix tool semantics. It searches for the pattern regexp and replaces it with replacement. Nothing in our case.)