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authorGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2016-11-14 14:36:18 -0200
committerGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2017-06-12 14:48:53 -0300
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tree91f9f99deb61df74653723eca492fd71ae61eaad /manual/math.texi
parent45f39d458827e07ab3075bed75f2670581a89f33 (diff)
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float128: Add strfromf128, strtof128, and wcstof128 to the manual
* manual/math.texi (Mathematics): Add description for _FloatN and _FloatNx types and mentions that they are not support in glibc for any architecture, so far. * manual/arith.texi (wcstof, wcstold): Replace the mention to stdlib.h with wchar.h. (Parsing of Floats): Add descriptions for strtofN and wcstofN. (Printing of Floats): Add description for strfromfN.
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diff --git a/manual/math.texi b/manual/math.texi
index 69a0acec9b..53c2bc1a1f 100644
--- a/manual/math.texi
+++ b/manual/math.texi
@@ -53,6 +53,17 @@ usually wise to pick the narrowest type that can accommodate your data.
Not all machines have a distinct @code{long double} type; it may be the
same as @code{double}.
+On some machines, @theglibc{} also provides @code{_Float@var{N}} and
+@code{_Float@var{N}x} types. These types are defined in @w{ISO/IEC TS
+18661-3}, which extends @w{ISO C} and defines floating-point types that
+are not machine-dependent. When such a type, such as @code{_Float128},
+is supported by @theglibc{}, extra variants for most of the mathematical
+functions provided for @code{double}, @code{float}, and @code{long
+double} are also provided for the supported type.
+
+Currently, support for @code{_Float@var{N}} or @code{_Float@var{N}x}
+types is not provided for any machine.
+
@menu
* Mathematical Constants:: Precise numeric values for often-used
constants.