Value of slider i, mapped onto the range a to b
Syntax
val(i,a,b)
Original Machine Code (in OPER resource) of Filter Factory 3.0 and 3.0.4 for Photoshop/Win32
| 59 | pop ecx (param_b) | . |
| 5E | pop esi (param_a) | . |
| 5B | pop ebx (param_i) | . |
| 2B C0 | sub eax,eax | res = 0; |
| 0B DB | or ebx,ebx | . |
| 7C 18 | jl +$18 (@@1) | if (param_i < 0) goto @@1; // return 0 |
| 83 FB 07 | cmp ebx,$07 (7) | . |
| 7F 13 | jnle +$13 (@@1) | if (param_i > 7) goto @@1; // return 0 |
| 8B 44 9F 64 | mov eax,[edi+ebx*4+$64 (ctl)] | res = ctl[param_i]; |
| 2B CE | sub ecx,esi | param_b -= param_a; |
| 0F AF C1 | imul eax,ecx | res *= param_b; |
| B9 FF 00 00 00 | mov ecx,$000000ff (255) | param_b = 255; |
| 99 | cdq | edx = signbit(eax); |
| F7 F9 | idiv ecx | res /= param_b; |
| 03 C6 | add eax,esi | res += param_a; // res = ctl[param_i] * (param_b-param_a) / 255 + param_a |
| @@1: | @@1: | |
| 50 | push eax | return res; |