s_shiftRightJam128Extra.c File Reference

#include <stdint.h>
#include "platform.h"
#include "primitiveTypes.h"

Include dependency graph for s_shiftRightJam128Extra.c:

Go to the source code of this file.

Functions
struct uint128_extra	softfloat_shiftRightJam128Extra (uint64_t a64, uint64_t a0, uint64_t extra, uint_fast32_t dist)

Function Documentation

softfloat_shiftRightJam128Extra()

struct uint128_extra softfloat_shiftRightJam128Extra	(	uint64_t	a64,
		uint64_t	a0,
		uint64_t	extra,
		uint_fast32_t	dist )

Definition at line 44 of file s_shiftRightJam128Extra.c.

{
    uint_fast8_t u8NegDist;
    struct uint128_extra z;
 
    u8NegDist = -dist;
    if ( dist < 64 ) {
        z.v.v64 = a64>>dist;
        z.v.v0 = a64<<(u8NegDist & 63) | a0>>dist;
        z.extra = a0<<(u8NegDist & 63);
    } else {
        z.v.v64 = 0;
        if ( dist == 64 ) {
            z.v.v0 = a64;
            z.extra = a0;
        } else {
            extra |= a0;
            if ( dist < 128 ) {
                z.v.v0 = a64>>(dist & 63);
                z.extra = a64<<(u8NegDist & 63);
            } else {
                z.v.v0 = 0;
                z.extra = (dist == 128) ? a64 : (a64 != 0);
            }
        }
    }
    z.extra |= (extra != 0);
    return z;
 
}