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| // SPDX-License-Identifier: GPL-2.0
| #include <linux/types.h>
| #include <linux/errno.h>
| #include <linux/uaccess.h>
|
| #include <asm/sfp-machine.h>
| #include <math-emu/soft-fp.h>
| #include <math-emu/double.h>
| #include <math-emu/single.h>
|
| int
| lfs(void *frD, void *ea)
| {
| FP_DECL_D(R);
| FP_DECL_S(A);
| FP_DECL_EX;
| float f;
|
| #ifdef DEBUG
| printk("%s: D %p, ea %p\n", __func__, frD, ea);
| #endif
|
| if (copy_from_user(&f, ea, sizeof(float)))
| return -EFAULT;
|
| FP_UNPACK_S(A, f);
|
| #ifdef DEBUG
| printk("A: %ld %lu %ld (%ld) [%08lx]\n", A_s, A_f, A_e, A_c,
| *(unsigned long *)&f);
| #endif
|
| FP_CONV(D, S, 2, 1, R, A);
|
| #ifdef DEBUG
| printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
| #endif
|
| if (R_c == FP_CLS_NAN) {
| R_e = _FP_EXPMAX_D;
| _FP_PACK_RAW_2_P(D, frD, R);
| } else {
| __FP_PACK_D(frD, R);
| }
|
| return 0;
| }
|
|
