Signed requantization evaluation stubs and unit tests

PiperOrigin-RevId: 323887449
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3bb9cef..53a4f9f 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -481,6 +481,12 @@
   src/math/sigmoid-scalar-lut2048-p1-div.c
   src/math/sigmoid-scalar-lut64-p2-div.c
   src/math/sigmoid-scalar-p5-div.c
+  src/qs8-requantization/fp32-scalar-lrintf.c
+  src/qs8-requantization/fp32-scalar-magic.c
+  src/qs8-requantization/precise-scalar-signed64.c
+  src/qs8-requantization/precise-scalar-unsigned32.c
+  src/qs8-requantization/precise-scalar-unsigned64.c
+  src/qs8-requantization/q31-scalar.c
   src/qu8-avgpool/9p8x-minmax-scalar-c1.c
   src/qu8-avgpool/9x-minmax-scalar-c1.c
   src/qu8-dwconv/up1x9-minmax-scalar.c
@@ -528,6 +534,8 @@
   src/f32-spmm/gen/16x1-minmax-psimd.c)
 
 SET(XNNPACK_PSIMD_ACCMATH_MICROKERNEL_SRCS
+  src/qs8-requantization/fp32-psimd.c
+  src/qs8-requantization/precise-psimd.c
   src/qu8-requantization/fp32-psimd.c
   src/qu8-requantization/precise-psimd.c)
 
@@ -718,6 +726,9 @@
   src/f32-vunary/gen/vneg-neon-x8.c
   src/f32-vunary/gen/vsqr-neon-x4.c
   src/f32-vunary/gen/vsqr-neon-x8.c
+  src/qs8-requantization/precise-neon.c
+  src/qs8-requantization/fp32-neon.c
+  src/qs8-requantization/q31-neon.c
   src/qu8-avgpool/9p8x-minmax-neon-c8.c
   src/qu8-avgpool/9x-minmax-neon-c8.c
   src/qu8-dwconv/up8x9-minmax-neon.c
@@ -1271,6 +1282,9 @@
   src/f32-vrnd/gen/vrndu-sse2-x8.c
   src/f32-vrnd/gen/vrndd-sse2-x4.c
   src/f32-vrnd/gen/vrndd-sse2-x8.c
+  src/qs8-requantization/fp32-sse2.c
+  src/qs8-requantization/precise-sse2.c
+  src/qs8-requantization/q31-sse2.c
   src/qu8-avgpool/9p8x-minmax-sse2-c8.c
   src/qu8-avgpool/9x-minmax-sse2-c8.c
   src/qu8-igemm/4x4c2-minmax-sse2.c
@@ -1304,6 +1318,8 @@
   src/math/sigmoid-sse2-p5-div.c)
 
 SET(XNNPACK_SSSE3_MICROKERNEL_SRCS
+  src/qs8-requantization/precise-ssse3.c
+  src/qs8-requantization/q31-ssse3.c
   src/qu8-requantization/precise-ssse3.c
   src/qu8-requantization/q31-ssse3.c)
 
@@ -1326,6 +1342,9 @@
   src/f32-vrnd/gen/vrndu-sse41-x8.c
   src/f32-vrnd/gen/vrndd-sse41-x4.c
   src/f32-vrnd/gen/vrndd-sse41-x8.c
+  src/qs8-requantization/fp32-sse4.c
+  src/qs8-requantization/precise-sse4.c
+  src/qs8-requantization/q31-sse4.c
   src/qu8-requantization/precise-sse4.c
   src/qu8-requantization/q31-sse4.c
   src/math/roundne-sse41.c