From f414a43632988b1a8d8f294a3876ad68154569ba Mon Sep 17 00:00:00 2001 From: Ozkan Sezer Date: Mon, 4 Jan 2021 03:00:10 +0300 Subject: [PATCH] simplify Watcom implementation of SDL_MostSignificantBitIndex32() --- include/SDL_bits.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/include/SDL_bits.h b/include/SDL_bits.h index f073abeb2..08b59eae3 100644 --- a/include/SDL_bits.h +++ b/include/SDL_bits.h @@ -48,10 +48,9 @@ extern "C" { * \return Index of the most significant bit, or -1 if the value is 0. */ #if defined(__WATCOMC__) && defined(__386__) -extern _inline int _SDL_clz_watcom (Uint32); -#pragma aux _SDL_clz_watcom = \ +extern _inline int _SDL_bsr_watcom (Uint32); +#pragma aux _SDL_bsr_watcom = \ "bsr eax, eax" \ - "xor eax, 31" \ parm [eax] nomemory \ value [eax] \ modify exact [eax] nomemory; @@ -72,7 +71,7 @@ SDL_MostSignificantBitIndex32(Uint32 x) if (x == 0) { return -1; } - return 31 - _SDL_clz_watcom(x); + return _SDL_bsr_watcom(x); #elif defined(_MSC_VER) unsigned long index; if (_BitScanReverse(&index, x)) {