petsc-3.14.6 2021-03-30
Report Typos and Errors
PetscIsInfReal
Returns whether the input is an infinity value.
Synopsis
#if defined(PETSC_USE_REAL___FLOAT128)
PetscBool
PetscIsInfReal
(
PetscReal
a)
Input Parameter
a
- the floating point number
Notes
uses the C99 standard isinf() on systems where it exists. Otherwises uses (a && a/2 == a), note that some optimizing compiles compile out this form, thus removing the check.
Level
beginner
Location
src/sys/utils/mathinf.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages