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Document NV to int cast macros

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Karl Williamson 2020-08-27 06:49:48 -06:00 committed by ℕicolas ℝ
parent bd5fa06648
commit 097ac3f8d7
1 changed files with 15 additions and 0 deletions
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15
perl.h
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@ -4142,6 +4142,21 @@ my_swap16(const U16 x) {
/* This may look like unnecessary jumping through hoops, but converting
out of range floating point values to integers *is* undefined behaviour,
and it is starting to bite.
=for apidoc_section Casting
=for apidoc Am|I32|I_32|NV what
Cast an NV to I32 while avoiding undefined C behavior
=for apidoc Am|U32|U_32|NV what
Cast an NV to U32 while avoiding undefined C behavior
=for apidoc Am|IV|I_V|NV what
Cast an NV to IV while avoiding undefined C behavior
=for apidoc Am|UV|U_V|NV what
Cast an NV to UV while avoiding undefined C behavior
=cut
*/
#ifndef CAST_INLINE
#define I_32(what) (cast_i32((NV)(what)))