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Diffstat (limited to 'softfloat/s_estimateSqrt32.c')
-rwxr-xr-xsoftfloat/s_estimateSqrt32.c37
1 files changed, 0 insertions, 37 deletions
diff --git a/softfloat/s_estimateSqrt32.c b/softfloat/s_estimateSqrt32.c
deleted file mode 100755
index e22a9dc..0000000
--- a/softfloat/s_estimateSqrt32.c
+++ /dev/null
@@ -1,37 +0,0 @@
-
-#include <stdint.h>
-#include "platform.h"
-#include "primitives.h"
-
-uint32_t softfloat_estimateSqrt32( unsigned int expA, uint32_t a )
-{
- static const uint16_t sqrtOddAdjustments[] = {
- 0x0004, 0x0022, 0x005D, 0x00B1, 0x011D, 0x019F, 0x0236, 0x02E0,
- 0x039C, 0x0468, 0x0545, 0x0631, 0x072B, 0x0832, 0x0946, 0x0A67
- };
- static const uint16_t sqrtEvenAdjustments[] = {
- 0x0A2D, 0x08AF, 0x075A, 0x0629, 0x051A, 0x0429, 0x0356, 0x029E,
- 0x0200, 0x0179, 0x0109, 0x00AF, 0x0068, 0x0034, 0x0012, 0x0002
- };
- int index;
- uint32_t z;
- union { uint32_t ui; int32_t i; } u32;
-
- index = ( a>>27 ) & 15;
- if ( expA & 1 ) {
- z = 0x4000 + ( a>>17 ) - sqrtOddAdjustments[ index ];
- z = ( ( a / z )<<14 ) + ( z<<15 );
- a >>= 1;
- } else {
- z = 0x8000 + ( a>>17 ) - sqrtEvenAdjustments[ index ];
- z = a / z + z;
- z = ( 0x20000 <= z ) ? 0xFFFF8000 : z<<15;
- if ( z <= a ) {
- u32.ui = a;
- return u32.i>>1;
- }
- }
- return (uint32_t) ( ( (uint64_t) a<<31 ) / z ) + ( z>>1 );
-
-}
-