X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=device%2Flib%2F_fs2uchar.c;h=cc3f6b1ac69d0be64053bbae1b4d02136d9d4b3d;hb=bb226788dab3832b0ec0cda70874ce3fce4eebc6;hp=3bfa951e12f9fbe72151142ac7ca9b2b039300e2;hpb=ea34442f1a2452c591734d551d76e46718665404;p=fw%2Fsdcc diff --git a/device/lib/_fs2uchar.c b/device/lib/_fs2uchar.c index 3bfa951e..cc3f6b1a 100644 --- a/device/lib/_fs2uchar.c +++ b/device/lib/_fs2uchar.c @@ -1,9 +1,48 @@ -#include +/* Floating point library in optimized assembly for 8051 + * Copyright (c) 2004, Paul Stoffregen, paul@pjrc.com + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#define SDCC_FLOAT_LIB +#include + + +#ifdef FLOAT_ASM_MCS51 + +// unsigned char __fs2uchar (float x) +static void dummy(void) __naked +{ + __asm + .globl ___fs2uchar +___fs2uchar: + mov r7, #134 + lcall fs2ulong_begin + mov dpl, a + ret + __endasm; +} + +#else /* convert float to unsigned char */ -unsigned char __fs2uchar (float f) { +unsigned char __fs2uchar (float f) +{ unsigned long ul=__fs2ulong(f); if (ul>=UCHAR_MAX) return UCHAR_MAX; return ul; } +#endif