================ @@ -15883,6 +15883,95 @@ The returned value is completely identical to the input except for the sign bit; in particular, if the input is a NaN, then the quiet/signaling bit and payload are perfectly preserved. +.. _i_fminmax_family: + +'``llvm.min.*``' Intrinsics Comparation +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Standard: +""""""""" + +IEEE754 and ISO C define some min/max operations, and they have some differences +on working with qNaN/sNaN and +0.0/-0.0. Here is the list: + +.. list-table:: + :header-rows: 2 + + * - ``ISO C`` + - fmin/fmax + - none + - fmininum/fmaximum + - fminimum_num/fmaximum_num + + * - ``IEEE754`` + - none + - nimNUM/maxNUM (2008) + - minimum/maximum (2019) + - minimumNumber/maximumNumber (2019) + + * - ``+0.0 vs -0.0`` + - either one + - +0.0 > -0.0 ---------------- wzssyqa wrote:
Thanks. You are right. I was confused by the hardware implementations of some hardware. ARM/MIPSr6/PowerPC implement +0.0>-0.0. https://github.com/llvm/llvm-project/pull/93841 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
