diff options
Diffstat (limited to 'manual')
| -rwxr-xr-x | manual/libm-err-tab.pl | 2 | ||||
| -rw-r--r-- | manual/math.texi | 31 |
2 files changed, 31 insertions, 2 deletions
diff --git a/manual/libm-err-tab.pl b/manual/libm-err-tab.pl index 6d0bffc372..0e83853949 100755 --- a/manual/libm-err-tab.pl +++ b/manual/libm-err-tab.pl @@ -58,7 +58,7 @@ use vars qw (%results @all_floats %suffices @all_functions); "creal", "csin", "csinh", "csqrt", "ctan", "ctanh", "erf", "erfc", "exp", "exp10", "exp2", "expm1", "fabs", "fdim", "floor", "fma", "fmax", "fmin", "fmod", "frexp", "gamma", "hypot", - "ilogb", "j0", "j1", "jn", "lgamma", "lrint", + "ilogb", "j0", "j1", "jn", "lgamma", "llogb", "lrint", "llrint", "log", "log10", "log1p", "log2", "logb", "lround", "llround", "modf", "nearbyint", "nextafter", "nextdown", "nexttoward", "nextup", "pow", "remainder", "remquo", "rint", "round", "scalb", diff --git a/manual/math.texi b/manual/math.texi index b4bb32345e..5ad8732eca 100644 --- a/manual/math.texi +++ b/manual/math.texi @@ -584,9 +584,20 @@ negative), @code{logb} returns @math{@infinity{}}. If @var{x} is zero, @comment math.h @comment ISO @deftypefunx int ilogbl (long double @var{x}) +@comment math.h +@comment ISO +@deftypefunx {long int} llogb (double @var{x}) +@comment math.h +@comment ISO +@deftypefunx {long int} llogbf (float @var{x}) +@comment math.h +@comment ISO +@deftypefunx {long int} llogbl (long double @var{x}) @safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} These functions are equivalent to the corresponding @code{logb} -functions except that they return signed integer values. +functions except that they return signed integer values. The +@code{ilogb} functions are from ISO C99; the @code{llogb} functions +are from TS 18661-1:2014. @end deftypefun @noindent @@ -605,6 +616,15 @@ This macro is defined in @w{ISO C99}. @comment math.h @comment ISO +@deftypevr Macro {long int} FP_LLOGB0 +@code{llogb} returns this value if its argument is @code{0}. The +numeric value is either @code{LONG_MIN} or @code{-LONG_MAX}. + +This macro is defined in TS 18661-1:2014. +@end deftypevr + +@comment math.h +@comment ISO @deftypevr Macro int FP_ILOGBNAN @code{ilogb} returns this value if its argument is @code{NaN}. The numeric value is either @code{INT_MIN} or @code{INT_MAX}. @@ -612,6 +632,15 @@ numeric value is either @code{INT_MIN} or @code{INT_MAX}. This macro is defined in @w{ISO C99}. @end deftypevr +@comment math.h +@comment ISO +@deftypevr Macro {long int} FP_LLOGBNAN +@code{llogb} returns this value if its argument is @code{NaN}. The +numeric value is either @code{LONG_MIN} or @code{LONG_MAX}. + +This macro is defined in TS 18661-1:2014. +@end deftypevr + These values are system specific. They might even be the same. The proper way to test the result of @code{ilogb} is as follows: |