| @node math.h |
| @section @file{math.h} |
| |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/math.h.html} |
| |
| Gnulib module: math |
| |
| Portability problems fixed by Gnulib: |
| @itemize |
| @item |
| The conversion from @code{int} to @code{long double} in incorrect on some |
| platforms: |
| glibc 2.7 on Linux/SPARC64. |
| |
| @item |
| The macro @code{NAN} is not defined on some platforms: |
| OpenBSD 4.0, AIX 5.1, IRIX 6.5. |
| |
| @item |
| The macro @code{NAN} is not exposed outside of C99 compilation on some |
| platforms: |
| glibc. |
| |
| @item |
| The macros @code{NAN} and @code{HUGE_VAL} expand to a function address |
| rather than a floating point constant on some platforms: |
| Solaris 10. |
| |
| @item |
| The macros @code{HUGE_VALF} and @code{HUGE_VALL} are not defined on some |
| platforms: |
| glibc/HPPA, glibc/SPARC, AIX 5.1, IRIX 6.5, Solaris 9, MSVC 9. |
| |
| @item |
| The macros @code{FP_ILOGB0} and @code{FP_ILOGBNAN} are not defined on some |
| platforms: |
| NetBSD 5.1, AIX 5.1, IRIX 6.5, Solaris 9, MSVC 9. |
| |
| @item |
| The macros @code{FP_ILOGB0} and @code{FP_ILOGBNAN} have wrong values on some |
| platforms: |
| Haiku 2017. |
| |
| @item |
| The macros @code{NAN}, @code{HUGE_VALL}, and @code{INFINITY} are not |
| defined on some platforms: |
| OpenVMS. |
| @end itemize |
| |
| Portability problems not fixed by Gnulib: |
| @itemize |
| @item |
| @code{NAN} is not a compile time constant with some compilers: |
| OpenVMS. |
| @item |
| The macro or variable @code{math_errhandling} is not defined on some platforms: |
| glibc 2.11, OpenBSD 4.9, NetBSD 5.1, UP-UX 11, IRIX 6.5, Cygwin 1.7.9, mingw, MSVC 9. |
| @end itemize |