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cosmetic changes

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This commit is contained in:
Josh Coalson 2001-05-03 03:55:53 +00:00
parent 6b8fa86b73
commit 2bbbcf6f58
1 changed files with 52 additions and 14 deletions
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66
src/libFLAC/i386/lpc_asm.nasm
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@ -27,6 +27,16 @@ cglobal FLAC__lpc_compute_autocorrelation_asm
; **********************************************************************
;
; void FLAC__lpc_compute_autocorrelation_asm(const real data[], unsigned data_len, unsigned lag, real autoc[])
; {
; real d;
; unsigned i;
;
; while(lag--) {
; for(i = lag, d = 0.0; i < data_len; i++)
; d += data[i] * data[i - lag];
; autoc[lag] = d;
; }
; }
;
FLAC__lpc_compute_autocorrelation_asm:
@ -53,6 +63,48 @@ FLAC__lpc_compute_autocorrelation_asm:
xor eax, eax ; eax == i-lag
fldz ; ST = d <- 0.0
.inner_loop:
cmp ebx, ecx
jae short .inner_end
fld qword [esi + ebx * 8] ; ST = data[i] d
fmul qword [esi + eax * 8] ; ST = data[i]*data[i-lag] d
faddp st1 ; d += data[i]*data[i-lag] ST = d
inc eax
inc ebx
cmp ebx, ecx
jae short .inner_end
fld qword [esi + ebx * 8] ; ST = data[i] d
fmul qword [esi + eax * 8] ; ST = data[i]*data[i-lag] d
faddp st1 ; d += data[i]*data[i-lag] ST = d
inc eax
inc ebx
cmp ebx, ecx
jae short .inner_end
fld qword [esi + ebx * 8] ; ST = data[i] d
fmul qword [esi + eax * 8] ; ST = data[i]*data[i-lag] d
faddp st1 ; d += data[i]*data[i-lag] ST = d
inc eax
inc ebx
cmp ebx, ecx
jae short .inner_end
fld qword [esi + ebx * 8] ; ST = data[i] d
fmul qword [esi + eax * 8] ; ST = data[i]*data[i-lag] d
faddp st1 ; d += data[i]*data[i-lag] ST = d
inc eax
inc ebx
cmp ebx, ecx
jae short .inner_end
fld qword [esi + ebx * 8] ; ST = data[i] d
fmul qword [esi + eax * 8] ; ST = data[i]*data[i-lag] d
faddp st1 ; d += data[i]*data[i-lag] ST = d
inc eax
inc ebx
cmp ebx, ecx
jae short .inner_end
fld qword [esi + ebx * 8] ; ST = data[i] d
fmul qword [esi + eax * 8] ; ST = data[i]*data[i-lag] d
faddp st1 ; d += data[i]*data[i-lag] ST = d
inc eax
inc ebx
cmp ebx, ecx
jae short .inner_end
fld qword [esi + ebx * 8] ; ST = data[i] d
@ -78,17 +130,3 @@ FLAC__lpc_compute_autocorrelation_asm:
ret
end
; void FLAC__lpc_compute_autocorrelation_asm(const real data[], unsigned data_len, unsigned lag, real autoc[])
; {
; real d;
; unsigned i;
;
; assert(lag > 0);
; assert(lag <= data_len);
;
; while(lag--) {
; for(i = lag, d = 0.0; i < data_len; i++)
; d += data[i] * data[i - lag];
; autoc[lag] = d;
; }
; }