Negative numbers are not flags.
Negative numbers are not flags.

tested: d dm --matrix 1 -0.3 0 0.7 1 0 0 0 1 --src gm --config matrix-8888 -w bad

BUG=skia:

Review URL: https://codereview.chromium.org/924343002

spezi77/android_external_skia,MarshedOut/android_external_skia,MonkeyZZZZ/platform_external_skia,w3nd1go/android_external_skia,nvoron23/skia,VRToxin-AOSP/android_external_skia,qrealka/skia-hc,invisiblek/android_external_skia,rubenvb/skia,AOSPB/external_skia,boulzordev/android_external_skia,TeamExodus/external_skia,invisiblek/android_external_skia,rubenvb/skia,pcwalton/skia,TeamTwisted/external_skia,MarshedOut/android_external_skia,Hikari-no-Tenshi/android_external_skia,MarshedOut/android_external_skia,vanish87/skia,AOSP-YU/platform_external_skia,AOSP-YU/platform_external_skia,ominux/skia,nvoron23/skia,YUPlayGodDev/platform_external_skia,nvoron23/skia,HalCanary/skia-hc,UBERMALLOW/external_skia,samuelig/skia,qrealka/skia-hc,shahrzadmn/skia,google/skia,google/skia,amyvmiwei/skia,VRToxin-AOSP/android_external_skia,PAC-ROM/android_external_skia,geekboxzone/mmallow_external_skia,MonkeyZZZZ/platform_external_skia,Jichao/skia,geekboxzone/mmallow_external_skia,OneRom/external_skia,rubenvb/skia,OneRom/external_skia,rubenvb/skia,w3nd1go/android_external_skia,google/skia,TeamTwisted/external_skia,HalCanary/skia-hc,noselhq/skia,todotodoo/skia,pcwalton/skia,Jichao/skia,YUPlayGodDev/platform_external_skia,AOSPB/external_skia,MinimalOS-AOSP/platform_external_skia,amyvmiwei/skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,TeamExodus/external_skia,AOSP-YU/platform_external_skia,TeamTwisted/external_skia,boulzordev/android_external_skia,todotodoo/skia,Igalia/skia,tmpvar/skia.cc,shahrzadmn/skia,samuelig/skia,Jichao/skia,MarshedOut/android_external_skia,TeamExodus/external_skia,HalCanary/skia-hc,MonkeyZZZZ/platform_external_skia,qrealka/skia-hc,AOSPB/external_skia,MinimalOS-AOSP/platform_external_skia,HalCanary/skia-hc,shahrzadmn/skia,Jichao/skia,noselhq/skia,Infinitive-OS/platform_external_skia,nfxosp/platform_external_skia,OneRom/external_skia,ominux/skia,samuelig/skia,aosp-mirror/platform_external_skia,YUPlayGodDev/platform_external_skia,noselhq/skia,boulzordev/android_external_skia,OneRom/external_skia,scroggo/skia,samuelig/skia,qrealka/skia-hc,AOSPB/external_skia,shahrzadmn/skia,Igalia/skia,MinimalOS-AOSP/platform_external_skia,AOSP-YU/platform_external_skia,boulzordev/android_external_skia,geekboxzone/mmallow_external_skia,nvoron23/skia,google/skia,timduru/platform-external-skia,OneRom/external_skia,nvoron23/skia,Igalia/skia,boulzordev/android_external_skia,todotodoo/skia,noselhq/skia,UBERMALLOW/external_skia,MinimalOS-AOSP/platform_external_skia,boulzordev/android_external_skia,google/skia,boulzordev/android_external_skia,google/skia,TeamTwisted/external_skia,scroggo/skia,HalCanary/skia-hc,pcwalton/skia,nfxosp/platform_external_skia,rubenvb/skia,amyvmiwei/skia,TeamExodus/external_skia,Infinitive-OS/platform_external_skia,todotodoo/skia,scroggo/skia,amyvmiwei/skia,pcwalton/skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,MarshedOut/android_external_skia,Hikari-no-Tenshi/android_external_skia,MarshedOut/android_external_skia,rubenvb/skia,TeamTwisted/external_skia,w3nd1go/android_external_skia,geekboxzone/mmallow_external_skia,VRToxin-AOSP/android_external_skia,Infinitive-OS/platform_external_skia,Infinitive-OS/platform_external_skia,scroggo/skia,google/skia,pcwalton/skia,tmpvar/skia.cc,MonkeyZZZZ/platform_external_skia,timduru/platform-external-skia,timduru/platform-external-skia,TeamExodus/external_skia,UBERMALLOW/external_skia,MinimalOS-AOSP/platform_external_skia,PAC-ROM/android_external_skia,timduru/platform-external-skia,w3nd1go/android_external_skia,Igalia/skia,BrokenROM/external_skia,shahrzadmn/skia,aosp-mirror/platform_external_skia,timduru/platform-external-skia,nfxosp/platform_external_skia,VRToxin-AOSP/android_external_skia,amyvmiwei/skia,spezi77/android_external_skia,nfxosp/platform_external_skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,AOSPB/external_skia,BrokenROM/external_skia,qrealka/skia-hc,shahrzadmn/skia,amyvmiwei/skia,Jichao/skia,MonkeyZZZZ/platform_external_skia,aosp-mirror/platform_external_skia,qrealka/skia-hc,Igalia/skia,UBERMALLOW/external_skia,UBERMALLOW/external_skia,YUPlayGodDev/platform_external_skia,Jichao/skia,ominux/skia,tmpvar/skia.cc,geekboxzone/mmallow_external_skia,VRToxin-AOSP/android_external_skia,AOSPB/external_skia,Igalia/skia,tmpvar/skia.cc,nfxosp/platform_external_skia,tmpvar/skia.cc,nfxosp/platform_external_skia,YUPlayGodDev/platform_external_skia,Hikari-no-Tenshi/android_external_skia,PAC-ROM/android_external_skia,noselhq/skia,VRToxin-AOSP/android_external_skia,tmpvar/skia.cc,samuelig/skia,qrealka/skia-hc,aosp-mirror/platform_external_skia,PAC-ROM/android_external_skia,shahrzadmn/skia,OneRom/external_skia,rubenvb/skia,samuelig/skia,noselhq/skia,TeamTwisted/external_skia,BrokenROM/external_skia,VRToxin-AOSP/android_external_skia,w3nd1go/android_external_skia,MonkeyZZZZ/platform_external_skia,spezi77/android_external_skia,timduru/platform-external-skia,Jichao/skia,Infinitive-OS/platform_external_skia,w3nd1go/android_external_skia,samuelig/skia,TeamExodus/external_skia,BrokenROM/external_skia,tmpvar/skia.cc,boulzordev/android_external_skia,google/skia,HalCanary/skia-hc,invisiblek/android_external_skia,nvoron23/skia,invisiblek/android_external_skia,pcwalton/skia,vanish87/skia,timduru/platform-external-skia,geekboxzone/mmallow_external_skia,nvoron23/skia,google/skia,tmpvar/skia.cc,UBERMALLOW/external_skia,ominux/skia,BrokenROM/external_skia,nfxosp/platform_external_skia,aosp-mirror/platform_external_skia,MinimalOS-AOSP/platform_external_skia,AOSPB/external_skia,MonkeyZZZZ/platform_external_skia,YUPlayGodDev/platform_external_skia,YUPlayGodDev/platform_external_skia,AOSP-YU/platform_external_skia,geekboxzone/mmallow_external_skia,MinimalOS-AOSP/platform_external_skia,todotodoo/skia,shahrzadmn/skia,MinimalOS-AOSP/platform_external_skia,w3nd1go/android_external_skia,pcwalton/skia,vanish87/skia,noselhq/skia,invisiblek/android_external_skia,UBERMALLOW/external_skia,spezi77/android_external_skia,invisiblek/android_external_skia,geekboxzone/mmallow_external_skia,AOSP-YU/platform_external_skia,Jichao/skia,Jichao/skia,PAC-ROM/android_external_skia,pcwalton/skia,nfxosp/platform_external_skia,VRToxin-AOSP/android_external_skia,HalCanary/skia-hc,ominux/skia,noselhq/skia,nvoron23/skia,TeamTwisted/external_skia,invisiblek/android_external_skia,TeamTwisted/external_skia,BrokenROM/external_skia,MonkeyZZZZ/platform_external_skia,shahrzadmn/skia,invisiblek/android_external_skia,PAC-ROM/android_external_skia,vanish87/skia,AOSPB/external_skia,w3nd1go/android_external_skia,TeamTwisted/external_skia,rubenvb/skia,AOSP-YU/platform_external_skia,rubenvb/skia,AOSP-YU/platform_external_skia,samuelig/skia,MarshedOut/android_external_skia,todotodoo/skia,vanish87/skia,PAC-ROM/android_external_skia,BrokenROM/external_skia,todotodoo/skia,noselhq/skia,vanish87/skia,vanish87/skia,AOSPB/external_skia,OneRom/external_skia,HalCanary/skia-hc,amyvmiwei/skia,PAC-ROM/android_external_skia,MarshedOut/android_external_skia,scroggo/skia,ominux/skia,Infinitive-OS/platform_external_skia,TeamExodus/external_skia,TeamExodus/external_skia,YUPlayGodDev/platform_external_skia,nvoron23/skia,todotodoo/skia,Infinitive-OS/platform_external_skia,OneRom/external_skia,MonkeyZZZZ/platform_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,spezi77/android_external_skia,TeamExodus/external_skia,MarshedOut/android_external_skia,AOSP-YU/platform_external_skia,spezi77/android_external_skia,ominux/skia,scroggo/skia,amyvmiwei/skia,UBERMALLOW/external_skia,scroggo/skia,BrokenROM/external_skia,Igalia/skia,ominux/skia,Hikari-no-Tenshi/android_external_skia,w3nd1go/android_external_skia,vanish87/skia,qrealka/skia-hc,nfxosp/platform_external_skia,aosp-mirror/platform_external_skia,PAC-ROM/android_external_skia,YUPlayGodDev/platform_external_skia,aosp-mirror/platform_external_skia,UBERMALLOW/external_skia,vanish87/skia,tmpvar/skia.cc,rubenvb/skia,google/skia,scroggo/skia,Hikari-no-Tenshi/android_external_skia,VRToxin-AOSP/android_external_skia,boulzordev/android_external_skia,geekboxzone/mmallow_external_skia,Igalia/skia,pcwalton/skia,Infinitive-OS/platform_external_skia,todotodoo/skia,Infinitive-OS/platform_external_skia,ominux/skia,OneRom/external_skia,MinimalOS-AOSP/platform_external_skia