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-rw-r--r--soft-fp/op-1.h218
1 files changed, 121 insertions, 97 deletions
diff --git a/soft-fp/op-1.h b/soft-fp/op-1.h
index 33682cf51e..3547e74cde 100644
--- a/soft-fp/op-1.h
+++ b/soft-fp/op-1.h
@@ -92,27 +92,28 @@
* normalize the data.
*/
-#define _FP_UNPACK_RAW_1(fs, X, val) \
- do \
- { \
- union _FP_UNION_##fs _flo; \
- _flo.flt = (val); \
- \
- X##_f = _flo.bits.frac; \
- X##_e = _flo.bits.exp; \
- X##_s = _flo.bits.sign; \
- } \
+#define _FP_UNPACK_RAW_1(fs, X, val) \
+ do \
+ { \
+ union _FP_UNION_##fs _FP_UNPACK_RAW_1_flo; \
+ _FP_UNPACK_RAW_1_flo.flt = (val); \
+ \
+ X##_f = _FP_UNPACK_RAW_1_flo.bits.frac; \
+ X##_e = _FP_UNPACK_RAW_1_flo.bits.exp; \
+ X##_s = _FP_UNPACK_RAW_1_flo.bits.sign; \
+ } \
while (0)
-#define _FP_UNPACK_RAW_1_P(fs, X, val) \
- do \
- { \
- union _FP_UNION_##fs *_flo = (union _FP_UNION_##fs *) (val); \
- \
- X##_f = _flo->bits.frac; \
- X##_e = _flo->bits.exp; \
- X##_s = _flo->bits.sign; \
- } \
+#define _FP_UNPACK_RAW_1_P(fs, X, val) \
+ do \
+ { \
+ union _FP_UNION_##fs *_FP_UNPACK_RAW_1_P_flo \
+ = (union _FP_UNION_##fs *) (val); \
+ \
+ X##_f = _FP_UNPACK_RAW_1_P_flo->bits.frac; \
+ X##_e = _FP_UNPACK_RAW_1_P_flo->bits.exp; \
+ X##_s = _FP_UNPACK_RAW_1_P_flo->bits.sign; \
+ } \
while (0)
/*
@@ -122,25 +123,26 @@
#define _FP_PACK_RAW_1(fs, val, X) \
do \
{ \
- union _FP_UNION_##fs _flo; \
+ union _FP_UNION_##fs _FP_PACK_RAW_1_flo; \
\
- _flo.bits.frac = X##_f; \
- _flo.bits.exp = X##_e; \
- _flo.bits.sign = X##_s; \
+ _FP_PACK_RAW_1_flo.bits.frac = X##_f; \
+ _FP_PACK_RAW_1_flo.bits.exp = X##_e; \
+ _FP_PACK_RAW_1_flo.bits.sign = X##_s; \
\
- (val) = _flo.flt; \
+ (val) = _FP_PACK_RAW_1_flo.flt; \
} \
while (0)
-#define _FP_PACK_RAW_1_P(fs, val, X) \
- do \
- { \
- union _FP_UNION_##fs *_flo = (union _FP_UNION_##fs *) (val); \
- \
- _flo->bits.frac = X##_f; \
- _flo->bits.exp = X##_e; \
- _flo->bits.sign = X##_s; \
- } \
+#define _FP_PACK_RAW_1_P(fs, val, X) \
+ do \
+ { \
+ union _FP_UNION_##fs *_FP_PACK_RAW_1_P_flo \
+ = (union _FP_UNION_##fs *) (val); \
+ \
+ _FP_PACK_RAW_1_P_flo->bits.frac = X##_f; \
+ _FP_PACK_RAW_1_P_flo->bits.exp = X##_e; \
+ _FP_PACK_RAW_1_P_flo->bits.sign = X##_s; \
+ } \
while (0)
@@ -181,13 +183,14 @@
#define _FP_MUL_MEAT_1_wide(wfracbits, R, X, Y, doit) \
do \
{ \
- _FP_FRAC_DECL_2 (_Z); \
- _FP_MUL_MEAT_DW_1_wide (wfracbits, _Z, X, Y, doit); \
+ _FP_FRAC_DECL_2 (_FP_MUL_MEAT_1_wide_Z); \
+ _FP_MUL_MEAT_DW_1_wide (wfracbits, _FP_MUL_MEAT_1_wide_Z, \
+ X, Y, doit); \
/* Normalize since we know where the msb of the multiplicands \
were (bit B), we know that the msb of the of the product is \
at either 2B or 2B-1. */ \
- _FP_FRAC_SRS_2 (_Z, wfracbits-1, 2*wfracbits); \
- R##_f = _Z_f0; \
+ _FP_FRAC_SRS_2 (_FP_MUL_MEAT_1_wide_Z, wfracbits-1, 2*wfracbits); \
+ R##_f = _FP_MUL_MEAT_1_wide_Z_f0; \
} \
while (0)
@@ -196,40 +199,49 @@
#define _FP_MUL_MEAT_DW_1_hard(wfracbits, R, X, Y) \
do \
{ \
- _FP_W_TYPE _xh, _xl, _yh, _yl; \
- _FP_FRAC_DECL_2 (_a); \
+ _FP_W_TYPE _FP_MUL_MEAT_DW_1_hard_xh, _FP_MUL_MEAT_DW_1_hard_xl; \
+ _FP_W_TYPE _FP_MUL_MEAT_DW_1_hard_yh, _FP_MUL_MEAT_DW_1_hard_yl; \
+ _FP_FRAC_DECL_2 (_FP_MUL_MEAT_DW_1_hard_a); \
\
/* split the words in half */ \
- _xh = X##_f >> (_FP_W_TYPE_SIZE/2); \
- _xl = X##_f & (((_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE/2)) - 1); \
- _yh = Y##_f >> (_FP_W_TYPE_SIZE/2); \
- _yl = Y##_f & (((_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE/2)) - 1); \
+ _FP_MUL_MEAT_DW_1_hard_xh = X##_f >> (_FP_W_TYPE_SIZE/2); \
+ _FP_MUL_MEAT_DW_1_hard_xl \
+ = X##_f & (((_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE/2)) - 1); \
+ _FP_MUL_MEAT_DW_1_hard_yh = Y##_f >> (_FP_W_TYPE_SIZE/2); \
+ _FP_MUL_MEAT_DW_1_hard_yl \
+ = Y##_f & (((_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE/2)) - 1); \
\
/* multiply the pieces */ \
- R##_f0 = _xl * _yl; \
- _a_f0 = _xh * _yl; \
- _a_f1 = _xl * _yh; \
- R##_f1 = _xh * _yh; \
+ R##_f0 = _FP_MUL_MEAT_DW_1_hard_xl * _FP_MUL_MEAT_DW_1_hard_yl; \
+ _FP_MUL_MEAT_DW_1_hard_a_f0 \
+ = _FP_MUL_MEAT_DW_1_hard_xh * _FP_MUL_MEAT_DW_1_hard_yl; \
+ _FP_MUL_MEAT_DW_1_hard_a_f1 \
+ = _FP_MUL_MEAT_DW_1_hard_xl * _FP_MUL_MEAT_DW_1_hard_yh; \
+ R##_f1 = _FP_MUL_MEAT_DW_1_hard_xh * _FP_MUL_MEAT_DW_1_hard_yh; \
\
/* reassemble into two full words */ \
- if ((_a_f0 += _a_f1) < _a_f1) \
+ if ((_FP_MUL_MEAT_DW_1_hard_a_f0 += _FP_MUL_MEAT_DW_1_hard_a_f1) \
+ < _FP_MUL_MEAT_DW_1_hard_a_f1) \
R##_f1 += (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE/2); \
- _a_f1 = _a_f0 >> (_FP_W_TYPE_SIZE/2); \
- _a_f0 = _a_f0 << (_FP_W_TYPE_SIZE/2); \
- _FP_FRAC_ADD_2 (R, R, _a); \
+ _FP_MUL_MEAT_DW_1_hard_a_f1 \
+ = _FP_MUL_MEAT_DW_1_hard_a_f0 >> (_FP_W_TYPE_SIZE/2); \
+ _FP_MUL_MEAT_DW_1_hard_a_f0 \
+ = _FP_MUL_MEAT_DW_1_hard_a_f0 << (_FP_W_TYPE_SIZE/2); \
+ _FP_FRAC_ADD_2 (R, R, _FP_MUL_MEAT_DW_1_hard_a); \
} \
while (0)
-#define _FP_MUL_MEAT_1_hard(wfracbits, R, X, Y) \
- do \
- { \
- _FP_FRAC_DECL_2 (_z); \
- _FP_MUL_MEAT_DW_1_hard (wfracbits, _z, X, Y); \
- \
- /* normalize */ \
- _FP_FRAC_SRS_2 (_z, wfracbits - 1, 2*wfracbits); \
- R##_f = _z_f0; \
- } \
+#define _FP_MUL_MEAT_1_hard(wfracbits, R, X, Y) \
+ do \
+ { \
+ _FP_FRAC_DECL_2 (_FP_MUL_MEAT_1_hard_z); \
+ _FP_MUL_MEAT_DW_1_hard (wfracbits, _FP_MUL_MEAT_1_hard_z, X, Y); \
+ \
+ /* normalize */ \
+ _FP_FRAC_SRS_2 (_FP_MUL_MEAT_1_hard_z, \
+ wfracbits - 1, 2*wfracbits); \
+ R##_f = _FP_MUL_MEAT_1_hard_z_f0; \
+ } \
while (0)
@@ -242,16 +254,16 @@
C primitives or _FP_DIV_HELP_ldiv for the ISO function. Which you
choose will depend on what the compiler does with divrem4. */
-#define _FP_DIV_MEAT_1_imm(fs, R, X, Y, doit) \
- do \
- { \
- _FP_W_TYPE _q, _r; \
- X##_f <<= (X##_f < Y##_f \
- ? R##_e--, _FP_WFRACBITS_##fs \
- : _FP_WFRACBITS_##fs - 1); \
- doit (_q, _r, X##_f, Y##_f); \
- R##_f = _q | (_r != 0); \
- } \
+#define _FP_DIV_MEAT_1_imm(fs, R, X, Y, doit) \
+ do \
+ { \
+ _FP_W_TYPE _FP_DIV_MEAT_1_imm_q, _FP_DIV_MEAT_1_imm_r; \
+ X##_f <<= (X##_f < Y##_f \
+ ? R##_e--, _FP_WFRACBITS_##fs \
+ : _FP_WFRACBITS_##fs - 1); \
+ doit (_FP_DIV_MEAT_1_imm_q, _FP_DIV_MEAT_1_imm_r, X##_f, Y##_f); \
+ R##_f = _FP_DIV_MEAT_1_imm_q | (_FP_DIV_MEAT_1_imm_r != 0); \
+ } \
while (0)
/* GCC's longlong.h defines a 2W / 1W => (1W,1W) primitive udiv_qrnnd
@@ -262,47 +274,59 @@
#define _FP_DIV_MEAT_1_udiv_norm(fs, R, X, Y) \
do \
{ \
- _FP_W_TYPE _nh, _nl, _q, _r, _y; \
+ _FP_W_TYPE _FP_DIV_MEAT_1_udiv_norm_nh; \
+ _FP_W_TYPE _FP_DIV_MEAT_1_udiv_norm_nl; \
+ _FP_W_TYPE _FP_DIV_MEAT_1_udiv_norm_q; \
+ _FP_W_TYPE _FP_DIV_MEAT_1_udiv_norm_r; \
+ _FP_W_TYPE _FP_DIV_MEAT_1_udiv_norm_y; \
\
/* Normalize Y -- i.e. make the most significant bit set. */ \
- _y = Y##_f << _FP_WFRACXBITS_##fs; \
+ _FP_DIV_MEAT_1_udiv_norm_y = Y##_f << _FP_WFRACXBITS_##fs; \
\
/* Shift X op correspondingly high, that is, up one full word. */ \
if (X##_f < Y##_f) \
{ \
R##_e--; \
- _nl = 0; \
- _nh = X##_f; \
+ _FP_DIV_MEAT_1_udiv_norm_nl = 0; \
+ _FP_DIV_MEAT_1_udiv_norm_nh = X##_f; \
} \
else \
{ \
- _nl = X##_f << (_FP_W_TYPE_SIZE - 1); \
- _nh = X##_f >> 1; \
+ _FP_DIV_MEAT_1_udiv_norm_nl = X##_f << (_FP_W_TYPE_SIZE - 1); \
+ _FP_DIV_MEAT_1_udiv_norm_nh = X##_f >> 1; \
} \
\
- udiv_qrnnd (_q, _r, _nh, _nl, _y); \
- R##_f = _q | (_r != 0); \
+ udiv_qrnnd (_FP_DIV_MEAT_1_udiv_norm_q, \
+ _FP_DIV_MEAT_1_udiv_norm_r, \
+ _FP_DIV_MEAT_1_udiv_norm_nh, \
+ _FP_DIV_MEAT_1_udiv_norm_nl, \
+ _FP_DIV_MEAT_1_udiv_norm_y); \
+ R##_f = (_FP_DIV_MEAT_1_udiv_norm_q \
+ | (_FP_DIV_MEAT_1_udiv_norm_r != 0)); \
} \
while (0)
-#define _FP_DIV_MEAT_1_udiv(fs, R, X, Y) \
- do \
- { \
- _FP_W_TYPE _nh, _nl, _q, _r; \
- if (X##_f < Y##_f) \
- { \
- R##_e--; \
- _nl = X##_f << _FP_WFRACBITS_##fs; \
- _nh = X##_f >> _FP_WFRACXBITS_##fs; \
- } \
- else \
- { \
- _nl = X##_f << (_FP_WFRACBITS_##fs - 1); \
- _nh = X##_f >> (_FP_WFRACXBITS_##fs + 1); \
- } \
- udiv_qrnnd (_q, _r, _nh, _nl, Y##_f); \
- R##_f = _q | (_r != 0); \
- } \
+#define _FP_DIV_MEAT_1_udiv(fs, R, X, Y) \
+ do \
+ { \
+ _FP_W_TYPE _FP_DIV_MEAT_1_udiv_nh, _FP_DIV_MEAT_1_udiv_nl; \
+ _FP_W_TYPE _FP_DIV_MEAT_1_udiv_q, _FP_DIV_MEAT_1_udiv_r; \
+ if (X##_f < Y##_f) \
+ { \
+ R##_e--; \
+ _FP_DIV_MEAT_1_udiv_nl = X##_f << _FP_WFRACBITS_##fs; \
+ _FP_DIV_MEAT_1_udiv_nh = X##_f >> _FP_WFRACXBITS_##fs; \
+ } \
+ else \
+ { \
+ _FP_DIV_MEAT_1_udiv_nl = X##_f << (_FP_WFRACBITS_##fs - 1); \
+ _FP_DIV_MEAT_1_udiv_nh = X##_f >> (_FP_WFRACXBITS_##fs + 1); \
+ } \
+ udiv_qrnnd (_FP_DIV_MEAT_1_udiv_q, _FP_DIV_MEAT_1_udiv_r, \
+ _FP_DIV_MEAT_1_udiv_nh, _FP_DIV_MEAT_1_udiv_nl, \
+ Y##_f); \
+ R##_f = _FP_DIV_MEAT_1_udiv_q | (_FP_DIV_MEAT_1_udiv_r != 0); \
+ } \
while (0)