From 99c9bc386f54964eea0ed93f6b036477076dae57 Mon Sep 17 00:00:00 2001 From: Brian Date: Fri, 26 Jan 2007 19:01:55 -0700 Subject: document, re-indent _mesa_ffsll() --- src/mesa/main/imports.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c index ad77373075..be2f04c188 100644 --- a/src/mesa/main/imports.c +++ b/src/mesa/main/imports.c @@ -574,28 +574,36 @@ _mesa_ffs(int i) #endif } + +/** + * Find position of first bit set in given value. + * XXX Warning: this function can only be used on 64-bit systems! + * \return position of lest significant bit set, starting at 1, return zero + * if no bits set. + */ int _mesa_ffsll(long long val) { #ifdef ffsll - return ffsll(val); + return ffsll(val); #else - int bit; + int bit; - assert(sizeof(val) == 8); + assert(sizeof(val) == 8); - bit = ffs(val); - if (bit != 0) - return bit; + bit = ffs(val); + if (bit != 0) + return bit; - bit = ffs(val >> 32); - if (bit != 0) - return 32 + bit; + bit = ffs(val >> 32); + if (bit != 0) + return 32 + bit; - return 0; + return 0; #endif } + /** * Return number of bits set in given GLuint. */ -- cgit v1.2.3