| OLD | NEW |
|---|
| (Empty) |
| 1 .global expm1f | |
| 2 .type expm1f,@function | |
| 3 expm1f: | |
| 4 flds 4(%esp) | |
| 5 mov 4(%esp),%eax | |
| 6 add %eax,%eax | |
| 7 cmp $0x01000000,%eax | |
| 8 jae 1f | |
| 9 # subnormal x, return x with underflow | |
| 10 fnstsw %ax | |
| 11 and $16,%ax | |
| 12 jnz 2f | |
| 13 fld %st(0) | |
| 14 fmul %st(1) | |
| 15 fstps 4(%esp) | |
| 16 2: ret | |
| 17 | |
| 18 .global expm1l | |
| 19 .type expm1l,@function | |
| 20 expm1l: | |
| 21 fldt 4(%esp) | |
| 22 jmp 1f | |
| 23 | |
| 24 .global expm1 | |
| 25 .type expm1,@function | |
| 26 expm1: | |
| 27 fldl 4(%esp) | |
| 28 mov 8(%esp),%eax | |
| 29 add %eax,%eax | |
| 30 cmp $0x00200000,%eax | |
| 31 jae 1f | |
| 32 # subnormal x, return x with underflow | |
| 33 fnstsw %ax | |
| 34 and $16,%ax | |
| 35 jnz 2f | |
| 36 fsts 4(%esp) | |
| 37 2: ret | |
| 38 1: fldl2e | |
| 39 fmulp | |
| 40 mov $0xc2820000,%eax | |
| 41 push %eax | |
| 42 flds (%esp) | |
| 43 pop %eax | |
| 44 fucomp %st(1) | |
| 45 fnstsw %ax | |
| 46 sahf | |
| 47 fld1 | |
| 48 jb 1f | |
| 49 # x*log2e < -65, return -1 without underflow | |
| 50 fstp %st(1) | |
| 51 fchs | |
| 52 ret | |
| 53 1: fld %st(1) | |
| 54 fabs | |
| 55 fucom %st(1) | |
| 56 fnstsw %ax | |
| 57 fstp %st(0) | |
| 58 fstp %st(0) | |
| 59 sahf | |
| 60 ja 1f | |
| 61 f2xm1 | |
| 62 ret | |
| 63 1: call 1f | |
| 64 fld1 | |
| 65 fsubrp | |
| 66 ret | |
| 67 | |
| 68 .global exp2f | |
| 69 .type exp2f,@function | |
| 70 exp2f: | |
| 71 flds 4(%esp) | |
| 72 jmp 1f | |
| 73 | |
| 74 .global exp2l | |
| 75 .global __exp2l | |
| 76 .hidden __exp2l | |
| 77 .type exp2l,@function | |
| 78 exp2l: | |
| 79 __exp2l: | |
| 80 fldt 4(%esp) | |
| 81 jmp 1f | |
| 82 | |
| 83 .global expf | |
| 84 .type expf,@function | |
| 85 expf: | |
| 86 flds 4(%esp) | |
| 87 jmp 2f | |
| 88 | |
| 89 .global exp | |
| 90 .type exp,@function | |
| 91 exp: | |
| 92 fldl 4(%esp) | |
| 93 2: fldl2e | |
| 94 fmulp | |
| 95 jmp 1f | |
| 96 | |
| 97 .global exp2 | |
| 98 .type exp2,@function | |
| 99 exp2: | |
| 100 fldl 4(%esp) | |
| 101 1: sub $12,%esp | |
| 102 fld %st(0) | |
| 103 fstpt (%esp) | |
| 104 mov 8(%esp),%ax | |
| 105 and $0x7fff,%ax | |
| 106 cmp $0x3fff+13,%ax | |
| 107 jb 4f # |x| < 8192 | |
| 108 cmp $0x3fff+15,%ax | |
| 109 jae 3f # |x| >= 32768 | |
| 110 fsts (%esp) | |
| 111 cmpl $0xc67ff800,(%esp) | |
| 112 jb 2f # x > -16382 | |
| 113 movl $0x5f000000,(%esp) | |
| 114 flds (%esp) # 0x1p63 | |
| 115 fld %st(1) | |
| 116 fsub %st(1) | |
| 117 faddp | |
| 118 fucomp %st(1) | |
| 119 fnstsw | |
| 120 sahf | |
| 121 je 2f # x - 0x1p63 + 0x1p63 == x | |
| 122 movl $1,(%esp) | |
| 123 flds (%esp) # 0x1p-149 | |
| 124 fdiv %st(1) | |
| 125 fstps (%esp) # raise underflow | |
| 126 2: fld1 | |
| 127 fld %st(1) | |
| 128 frndint | |
| 129 fxch %st(2) | |
| 130 fsub %st(2) # st(0)=x-rint(x), st(1)=1, st(2)=rint(x) | |
| 131 f2xm1 | |
| 132 faddp # 2^(x-rint(x)) | |
| 133 1: fscale | |
| 134 fstp %st(1) | |
| 135 add $12,%esp | |
| 136 ret | |
| 137 3: xor %eax,%eax | |
| 138 4: cmp $0x3fff-64,%ax | |
| 139 fld1 | |
| 140 jb 1b # |x| < 0x1p-64 | |
| 141 fstpt (%esp) | |
| 142 fistl 8(%esp) | |
| 143 fildl 8(%esp) | |
| 144 fsubrp %st(1) | |
| 145 addl $0x3fff,8(%esp) | |
| 146 f2xm1 | |
| 147 fld1 | |
| 148 faddp # 2^(x-rint(x)) | |
| 149 fldt (%esp) # 2^rint(x) | |
| 150 fmulp | |
| 151 add $12,%esp | |
| 152 ret | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1724903002:
[fusl] Remove code for unsupported architectures (Closed)
Base URL: git@github.com:domokit/mojo.git@master