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SKP_Silk_macros.go
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SKP_Silk_macros.go
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package silk
import "math"
func SKP_SMULWB(a32 int32, b32 int32) int32 {
return ((a32 >> 16) * int32(int16(b32))) + (((a32 & math.MaxUint16) * int32(int16(b32))) >> 16)
}
func SKP_SMLAWB(a32 int32, b32 int32, c32 int32) int32 {
return a32 + (((b32 >> 16) * int32(int16(c32))) + (((b32 & math.MaxUint16) * int32(int16(c32))) >> 16))
}
func SKP_SMULWT(a32 int32, b32 int32) int32 {
return (a32>>16)*(b32>>16) + (((a32 & math.MaxUint16) * (b32 >> 16)) >> 16)
}
func SKP_SMLAWT(a32 int32, b32 int32, c32 int32) int32 {
return a32 + (b32>>16)*(c32>>16) + (((b32 & math.MaxUint16) * (c32 >> 16)) >> 16)
}
func SKP_SMULBB(a32 int32, b32 int32) int32 {
return int32(int16(a32)) * int32(int16(b32))
}
func SKP_SMLABB(a32 int32, b32 int32, c32 int32) int32 {
return a32 + (int32(int16(b32)))*int32(int16(c32))
}
func SKP_SMULBT(a32 int32, b32 int32) int32 {
return int32(int16(a32)) * (b32 >> 16)
}
func SKP_SMLABT(a32 int32, b32 int32, c32 int32) int32 {
return a32 + (int32(int16(b32)))*(c32>>16)
}
func SKP_SMLAL(a64 int64, b32 int32, c32 int32) int64 {
return a64 + int64(b32)*int64(c32)
}
func SKP_SMULWW(a32 int32, b32 int32) int32 {
return SKP_SMULWB(a32, b32) + a32*SKP_RSHIFT_ROUND(b32, 16)
}
func SKP_SMLAWW(a32 int32, b32 int32, c32 int32) int32 {
return SKP_SMLAWB(a32, b32, c32) + b32*SKP_RSHIFT_ROUND(c32, 16)
}
func SKP_SMMUL(a32 int32, b32 int32) int32 {
return int32((int64(a32) * int64(b32)) >> 32)
}
func SKP_ADD_SAT32(a int32, b int32) int32 {
if ((a + b) & math.MinInt32) == 0 {
if ((a & b) & math.MinInt32) != 0 {
return math.MinInt32
}
return a + b
}
if ((a | b) & math.MinInt32) == 0 {
return SKP_int32_MAX
}
return a + b
}
func SKP_SUB_SAT32(a int32, b int32) int32 {
if ((a - b) & math.MinInt32) == 0 {
if (a & (b ^ math.MinInt32) & math.MinInt32) != 0 {
return math.MinInt32
}
return a - b
}
if ((a ^ math.MinInt32) & b & math.MinInt32) != 0 {
return SKP_int32_MAX
}
return a - b
}