From 9ca6b8e19edefea5003d514b35d133f796add639 Mon Sep 17 00:00:00 2001 From: burnus Date: Mon, 17 Jan 2011 19:03:28 +0000 Subject: 2011-01-17 Tobias Burnus 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 --- libquadmath/ChangeLog | 5 +++++ libquadmath/libquadmath.texi | 47 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) (limited to 'libquadmath') diff --git a/libquadmath/ChangeLog b/libquadmath/ChangeLog index f5308db895c..b6929df0258 100644 --- a/libquadmath/ChangeLog +++ b/libquadmath/ChangeLog @@ -1,3 +1,8 @@ +2011-01-17 Tobias Burnus + + PR fortran/47295 + * libquadmath.text: Document typedef and constants. + 2011-01-17 Tobias Burnus PR fortran/46817 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 @@ -83,6 +84,52 @@ Math Library Application Programming Interface (API). @end menu +@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 --------------------------------------------------------------------- -- cgit v1.2.1