Improvements to float support in printf_fast

[fw/sdcc] / device / lib / _fsget1arg.c

#define SDCC_FLOAT_LIB
#include <float.h>


static void dummy(void) _naked
{
        // input passed in a,b,dph,dpl
        _asm
        .globl  fsgetarg
fsgetarg:
        // extract the input, placing it into:
        //      sign     exponent   mantiassa
        //      ----     --------   ---------
        //  a:  sign_a   exp_a     r4/r3/r2
        //
        mov     r2, dpl
        mov     r3, dph
        mov     c, b.7
        rlc     a
        mov     sign_a, c
        jz      00001$
        setb    b.7
00001$:
        mov     exp_a, a
        mov     r4, b
        ret
        _endasm;
}