diff options
| author | burnus <burnus@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-01-17 19:03:28 +0000 |
|---|---|---|
| committer | burnus <burnus@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-01-17 19:03:28 +0000 |
| commit | 9ca6b8e19edefea5003d514b35d133f796add639 (patch) | |
| tree | 38d035a053d09ea1651ea84d45c02a8a11081dea /libquadmath | |
| parent | 9b19281364923ce44387287dcbfa45322ca07129 (diff) | |
| download | gcc-9ca6b8e19edefea5003d514b35d133f796add639.tar.gz | |
2011-01-17 Tobias Burnus <burnus@net-b.de>
PR fortran/47295
* libquadmath.text: Document typedef and constants.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168930 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libquadmath')
| -rw-r--r-- | libquadmath/ChangeLog | 5 | ||||
| -rw-r--r-- | libquadmath/libquadmath.texi | 47 |
2 files changed, 52 insertions, 0 deletions
diff --git a/libquadmath/ChangeLog b/libquadmath/ChangeLog index f5308db895c..b6929df0258 100644 --- a/libquadmath/ChangeLog +++ b/libquadmath/ChangeLog @@ -1,5 +1,10 @@ 2011-01-17 Tobias Burnus <burnus@net-b.de> + PR fortran/47295 + * libquadmath.text: Document typedef and constants. + +2011-01-17 Tobias Burnus <burnus@net-b.de> + PR fortran/46817 * quadmath-imp.h: Refer to libquadmath not ot libiberty, bump copyright year and use /**/ instead of // comments. diff --git a/libquadmath/libquadmath.texi b/libquadmath/libquadmath.texi index 3dbbe5d6380..bcd205939d9 100644 --- a/libquadmath/libquadmath.texi +++ b/libquadmath/libquadmath.texi @@ -72,6 +72,7 @@ Math Library Application Programming Interface (API). @comment better formatting. @comment @menu +* Typedef and constants:: Defined data types and constants * Math Library Routines:: The Libquadmath math runtime application programming interface. * I/O Library Routines:: The Libquadmath I/O runtime application @@ -84,6 +85,52 @@ Math Library Application Programming Interface (API). @c --------------------------------------------------------------------- +@c Defined macros +@c --------------------------------------------------------------------- + +@node Typedef and constants +@chapter Typedef and constants + +The following data type has been defined via @code{typedef}. + +@table @asis +@item @code{__complex128}: @code{__float128}-based complex number +@end table + +The following macros are defined, which give the numeric limits of the +@code{__float128} data type. + +@table @asis +@item @code{FLT128_MAX}: largest finite number +@item @code{FLT128_MIN}: smallest positive number with full precision +@item @code{FLT128_EPSILON}: difference between 1 and the next larger + representable number +@item @code{FLT128_DENORM_MIN}: smallest positive denormalized number +@item @code{FLT128_MANT_DIG}: number of digits in the mantissa (bit precision) +@item @code{FLT128_MIN_EXP}: maximal negative exponent +@item @code{FLT128_MAX_EXP}: maximal positive exponent +@end table + +The following mathematical constants of type @code{__float128} are defined. + +@table @asis +@item @code{M_Eq}: the constant e (Euler's number) +@item @code{M_LOG2Eq}: binary logarithm of 2 +@item @code{M_LOG10Eq}: common, decimal logarithm of 2 +@item @code{M_LN2q}: natural logarithm of 2 +@item @code{M_LN10q}: natural logarithm of 10 +@item @code{M_PIq}: pi +@item @code{M_PI_2q}: two pi +@item @code{M_PI_4q}: four pi +@item @code{M_1_PIq}: one over pi +@item @code{M_2_PIq}: one over two pi +@item @code{M_2_SQRTPIq}: two over square root of pi +@item @code{M_SQRT2q}: square root of 2 +@item @code{M_SQRT1_2q}: one over square root of 2 +@end table + + +@c --------------------------------------------------------------------- @c Math routines @c --------------------------------------------------------------------- |