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README.md

@@ -8,19 +8,31 @@ GCC Intrinsic: <https://gcc.gnu.org/onlinedocs/gcc/LoongArch-SX-Vector-Intrinsic
 
 ### vfmadd.s/d
 
-Vector Fused Multiply Add Single/Double Precision
+Vector Fused Multiply Add (`a * b + c`) Single/Double Precision
+
+- Single Precision: `__m128 __lsx_vfmadd_s (__m128 a, __m128 b, __m128 c)`
+- Double Precision: `__m128d __lsx_vfmadd_d (__m128d a, __m128d b, __m128d c)`
 
 ### vfmsub.s/d
 
-Vector Fused Multiply Subtract Single/Double Precision
+Vector Fused Multiply Subtract (`a * b - c`) Single/Double Precision
+
+- Single Precision: `__m128 __lsx_vfmsub_s (__m128 a, __m128 b, __m128 c)`
+- Double Precision: `__m128d __lsx_vfmsub_d (__m128d a, __m128d b, __m128d c)`
+
+### vfnmadd.s/d
 
-### vnfmadd.s/d
+Vector Fused Negative Multiply Add (`- a * b - c`) Single/Double Precision
 
-Vector Negative Fused Multiply Add Single/Double Precision
+- Single Precision: `__m128 __lsx_vfnmadd_s (__m128 a, __m128 b, __m128 c)`
+- Double Precision: `__m128d __lsx_vfnmadd_d (__m128d a, __m128d b, __m128d c)`
 
-### vnfmsub.s/d
+### vfnmsub.s/d
 
-Vector Negative Fused Multiply Subtract Single/Double Precision
+Vector Fused Negative Multiply Subtract (`- a * b + c`) Single/Double Precision
+
+- Single Precision: `__m128 __lsx_vfnmsub_s (__m128 a, __m128 b, __m128 c)`
+- Double Precision: `__m128d __lsx_vfnmsub_d (__m128d a, __m128d b, __m128d c)`
 
 ### vfcmp.cond.s/d
 
@@ -30,12 +42,16 @@ Vector Float Compare
 
 ### vbitsel.v
 
-Vector Bit Selection
+Vector Bit Selection: For each bit, `c ? b : a`
+
+`__m128i __lsx_vbitsel_v (__m128i a, __m128i b, __m128i c)`
 
 ### vshuf.b
 
 Vector Shuffle
 
+`__m128i __lsx_vshuf_b (__m128i a, __m128i b, __m128i c)`
+
 ### vld
 
 Vector Load