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Update release notes.

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Stephen Heumann 2021-09-02 18:04:14 -05:00
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@ -34,6 +34,9 @@ Updated by Stephen Heumann and Kelvin Sherlock, 2017-2021
11. Some new library functions and features from C99 and C11 have
been added. See "Library Updates."
12. Floating-point constant expressions now use extended precision.
See "Evaluation of Floating-Point Expressions and Constants."
2.1.1 B3 1. Bugs squashed. See bug notes, below.
2.1.0 1. Bugs squashed. See bug notes, below.
@ -666,7 +669,7 @@ For all the functions taking an argument called excepts, it is a bitwise OR of f
fegetround() gets the current rounding direction. fesetround() sets the rounding direction. fegetenv() saves a representation of the current floating-point environment to *envp. feholdexcept() saves a representation of the current environment, then clears all exception flags and disables halts for all floating-point exceptions. fesetenv() sets the floating-point environment, but does not raise any exceptions. feupdateenv() temporarily saves the currently raised floating-point exceptions, installs the specified floating-point environment, and then raises the saved exceptions.
Except for fetestexcept() and fegetround(), these calls return 0 if they successfully carried out the operation, or non-zero otherwise. Under ORCA/C, they always succeed if given valid arguments. Under ORCA/C, these functions all correspond to operations on the SANE environment; see the Apple Numerics Manual for details on its behavior. To ensure that these functions interact properly with floating-point operations in the program, #pragma STDC FENV_ACCESS ON should be in effect when they are called; see "New Language Features," above.
Except for fetestexcept() and fegetround(), these calls return 0 if they successfully carried out the operation, or non-zero otherwise. Under ORCA/C, they always succeed if given valid arguments. To ensure that these functions interact properly with floating-point operations in the program, #pragma STDC FENV_ACCESS ON should be in effect when they are called; see "New Language Features," above. Under ORCA/C, these functions all correspond to operations on the SANE environment; see the Apple Numerics Manual for details on its behavior. Note that these functions may not behave as expected when using an FPE or compatible floating-point card.
10. (C99) Several new function-like macros for classification of floating-point numbers have been added:
@ -1208,6 +1211,8 @@ int foo(int[42]);
160. The volatile type qualifier was omitted from declarations recorded in a .sym file. This could lead to volatile accesses being optimized away.
161. The system() function might return the wrong value when using the large memory model. (This was a regression introduced in ORCA/C 2.2.0 B3.)
-- Bugs from C 2.1.0 that have been fixed -----------------------------------
1. In some situations, fread() reread the first 1K or so of the file.