From 737a93a77cd45f69882f51dc3e197b5db6029ebd Mon Sep 17 00:00:00 2001 From: ptitSeb Date: Tue, 29 Apr 2025 17:56:08 +0200 Subject: [INTERP] Improved (V)RSQRTSS opcodes --- src/emu/x64runavxf30f.c | 11 ++++++++++- src/emu/x64runf30f.c | 12 ++++++++++-- 2 files changed, 20 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/emu/x64runavxf30f.c b/src/emu/x64runavxf30f.c index 4b2c99de..1e67ecd4 100644 --- a/src/emu/x64runavxf30f.c +++ b/src/emu/x64runavxf30f.c @@ -222,7 +222,16 @@ uintptr_t RunAVX_F30F(x64emu_t *emu, vex_t vex, uintptr_t addr, int *step) nextop = F8; GETEX(0); GETGX; GETVX; GETGY; - GX->f[0] = 1.0f/sqrtf(EX->f[0]); + if(EX->f[0]==0) + GX->f[0] = 1.0f/EX->f[0]; + else if (EX->f[0]<0) + GX->f[0] = -NAN; + else if (isnan(EX->f[0])) + GX->f[0] = EX->f[0]; + else if (isinf(EX->f[0])) + GX->f[0] = 0.0; + else + GX->f[0] = 1.0f/sqrtf(EX->f[0]); if(GX!=VX) { GX->ud[1] = VX->ud[1]; GX->q[1] = VX->q[1]; diff --git a/src/emu/x64runf30f.c b/src/emu/x64runf30f.c index ea31cf01..6ab023ea 100644 --- a/src/emu/x64runf30f.c +++ b/src/emu/x64runf30f.c @@ -221,8 +221,16 @@ uintptr_t RunF30F(x64emu_t *emu, rex_t rex, uintptr_t addr) nextop = F8; GETEX(0); GETGX; - NAN_PROPAGATION(GX->f[0], EX->f[0], break); - GX->f[0] = 1.0f/sqrtf(EX->f[0]); + if(EX->f[0]==0) + GX->f[0] = 1.0f/EX->f[0]; + else if (EX->f[0]<0) + GX->f[0] = -NAN; + else if (isnan(EX->f[0])) + GX->f[0] = EX->f[0]; + else if (isinf(EX->f[0])) + GX->f[0] = 0.0; + else + GX->f[0] = 1.0f/sqrtf(EX->f[0]); break; case 0x53: /* RCPSS Gx, Ex */ nextop = F8; -- cgit 1.4.1