Hi Samuel, thank you for the interesting sources!
Best regards, Simon On 2020-04-08, Samuel Lelievre <samuel.lelie...@gmail.com> wrote: > About Sage and floating-point numbers, if I remember correctly, > > - IEEE 754 is not a complete specification, some details are left > up to the implementation and therefore IEEE 754 compliant > computations can vary from machine to machine (depending > on processor or OS) > - in Sage, `RDF` and `float` use machine floats and so follow IEEE 754 > - by contrast RR and RealField are specified more tightly so as to > give the same computations on any machine > - the range of exponents in RR is a lot wider than in RDF > - RDF is a lot faster than RR > > Two excellent sources on real and floating-point numbers in Sage > > - The many ways of computing with real numbers > Talk by Vincent Delecroix at Sage Days 88 in IMA, U Minnesota, 2017 > https://www.ima.umn.edu/2017-2018.2/W8.21-25.17/26308 > > - What are the different real numbers in Sage > https://ask.sagemath.org/question/9950 > > Related Sage Trac tickets > > - Deprecate is_RealField / is_RealNumber > https://trac.sagemath.org/ticket/24525 > > - rename RealField/RealNumber > https://trac.sagemath.org/ticket/24524 > > - Modernize sage.rings.real_mpfr > https://trac.sagemath.org/ticket/24457 > > - Thematic tutorial about real and complex numbers in Sage > https://trac.sagemath.org/ticket/15944 > > - Deprecate global RealNumber() and ComplexNumber() > https://trac.sagemath.org/ticket/13110 > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/r6metq%242sph%241%40ciao.gmane.io.
