diff options
Diffstat (limited to 'soft-fp/op-1.h')
| -rw-r--r-- | soft-fp/op-1.h | 46 |
1 files changed, 16 insertions, 30 deletions
diff --git a/soft-fp/op-1.h b/soft-fp/op-1.h index 3547e74cde..fa68269910 100644 --- a/soft-fp/op-1.h +++ b/soft-fp/op-1.h @@ -73,7 +73,7 @@ #define _FP_FRAC_DEC_1(X, Y) (X##_f -= Y##_f) #define _FP_FRAC_CLZ_1(z, X) __FP_CLZ (z, X##_f) -/* Predicates */ +/* Predicates. */ #define _FP_FRAC_NEGP_1(X) ((_FP_WS_TYPE) X##_f < 0) #define _FP_FRAC_ZEROP_1(X) (X##_f == 0) #define _FP_FRAC_OVERP_1(fs, X) (X##_f & _FP_OVERFLOW_##fs) @@ -87,10 +87,8 @@ #define _FP_MINFRAC_1 1 #define _FP_MAXFRAC_1 (~(_FP_WS_TYPE) 0) -/* - * Unpack the raw bits of a native fp value. Do not classify or - * normalize the data. - */ +/* Unpack the raw bits of a native fp value. Do not classify or + normalize the data. */ #define _FP_UNPACK_RAW_1(fs, X, val) \ do \ @@ -116,9 +114,7 @@ } \ while (0) -/* - * Repack the raw bits of a native fp value. - */ +/* Repack the raw bits of a native fp value. */ #define _FP_PACK_RAW_1(fs, val, X) \ do \ @@ -146,9 +142,7 @@ while (0) -/* - * Multiplication algorithms: - */ +/* Multiplication algorithms: */ /* Basic. Assuming the host word size is >= 2*FRACBITS, we can do the multiplication immediately. */ @@ -203,7 +197,7 @@ _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 */ \ + /* Split the words in half. */ \ _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); \ @@ -211,7 +205,7 @@ _FP_MUL_MEAT_DW_1_hard_yl \ = Y##_f & (((_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE/2)) - 1); \ \ - /* multiply the pieces */ \ + /* Multiply the pieces. */ \ 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; \ @@ -219,7 +213,7 @@ = _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 */ \ + /* Reassemble into two full words. */ \ 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); \ @@ -237,7 +231,7 @@ _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 */ \ + /* Normalize. */ \ _FP_FRAC_SRS_2 (_FP_MUL_MEAT_1_hard_z, \ wfracbits - 1, 2*wfracbits); \ R##_f = _FP_MUL_MEAT_1_hard_z_f0; \ @@ -245,9 +239,7 @@ while (0) -/* - * Division algorithms: - */ +/* Division algorithms: */ /* Basic. Assuming the host word size is >= 2*FRACBITS, we can do the division immediately. Give this macro either _FP_DIV_HELP_imm for @@ -330,11 +322,9 @@ while (0) -/* - * Square root algorithms: - * We have just one right now, maybe Newton approximation - * should be added for those machines where division is fast. - */ +/* Square root algorithms: + We have just one right now, maybe Newton approximation + should be added for those machines where division is fast. */ #define _FP_SQRT_MEAT_1(R, S, T, X, q) \ do \ @@ -360,17 +350,13 @@ } \ while (0) -/* - * Assembly/disassembly for converting to/from integral types. - * No shifting or overflow handled here. - */ +/* Assembly/disassembly for converting to/from integral types. + No shifting or overflow handled here. */ #define _FP_FRAC_ASSEMBLE_1(r, X, rsize) (r = X##_f) #define _FP_FRAC_DISASSEMBLE_1(X, r, rsize) (X##_f = r) -/* - * Convert FP values between word sizes - */ +/* Convert FP values between word sizes. */ #define _FP_FRAC_COPY_1_1(D, S) (D##_f = S##_f) |