Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#include <linux/types.h>

#include <linux/errno.h>

#include <asm/uaccess.h>

#include "soft-fp.h"

#include "double.h"

int

fmsub(void *frD, void *frA, void *frB, void *frC)

{

        FP_DECL_D(R);

        FP_DECL_D(A);

        FP_DECL_D(B);

        FP_DECL_D(C);

        FP_DECL_D(T);

        int ret = 0;

#ifdef DEBUG

        printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC);

#endif

        __FP_UNPACK_D(A, frA);

        __FP_UNPACK_D(B, frB);

        __FP_UNPACK_D(C, frC);

#ifdef DEBUG

        printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);

        printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);

        printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c);

#endif

        if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) ||

            (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF))

                ret |= EFLAG_VXIMZ;

        FP_MUL_D(T, A, C);

        if (B_c != FP_CLS_NAN)

                B_s ^= 1;

        if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF)

                ret |= EFLAG_VXISI;

        FP_ADD_D(R, T, B);

#ifdef DEBUG

        printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);

#endif

        return (ret | __FP_PACK_D(frD, R));

}