[sim] integrated SoftFloat-3 with ISA sim; removed SoftFloat-2b

[riscv-isa-sim.git] / softfloat / SoftFloat-3 / source / f64_sqrt.c

diff --git a/softfloat/SoftFloat-3/source/f64_sqrt.c b/softfloat/SoftFloat-3/source/f64_sqrt.c
deleted file mode 100755 (executable)
index cd91010..0000000
--- a/softfloat/SoftFloat-3/source/f64_sqrt.c
+++ /dev/null
@@ -1,74 +0,0 @@
-\r
-#include <stdbool.h>\r
-#include <stdint.h>\r
-#include "platform.h"\r
-#include "primitives.h"\r
-#include "internals.h"\r
-#include "specialize.h"\r
-#include "softfloat.h"\r
-\r
-float64_t f64_sqrt( float64_t a )\r
-{\r
-    union ui64_f64 uA;\r
-    uint_fast64_t uiA;\r
-    bool signA;\r
-    int_fast16_t expA;\r
-    uint_fast64_t sigA, uiZ;\r
-    struct exp16_sig64 normExpSig;\r
-    int_fast16_t expZ;\r
-    uint_fast32_t sigZ32;\r
-    uint_fast64_t sigZ;\r
-    struct uint128 term, rem;\r
-    union ui64_f64 uZ;\r
-\r
-    uA.f = a;\r
-    uiA = uA.ui;\r
-    signA = signF64UI( uiA );\r
-    expA = expF64UI( uiA );\r
-    sigA = fracF64UI( uiA );\r
-    if ( expA == 0x7FF ) {\r
-        if ( sigA ) {\r
-            uiZ = softfloat_propagateNaNF64UI( uiA, 0 );\r
-            goto uiZ;\r
-        }\r
-        if ( ! signA ) return a;\r
-        goto invalid;\r
-    }\r
-    if ( signA ) {\r
-        if ( ! ( expA | sigA ) ) return a;\r
-        goto invalid;\r
-    }\r
-    if ( ! expA ) {\r
-        if ( ! sigA ) return a;\r
-        normExpSig = softfloat_normSubnormalF64Sig( sigA );\r
-        expA = normExpSig.exp;\r
-        sigA = normExpSig.sig;\r
-    }\r
-    expZ = ( ( expA - 0x3FF )>>1 ) + 0x3FE;\r
-    sigA |= UINT64_C( 0x0010000000000000 );\r
-    sigZ32 = softfloat_estimateSqrt32( expA, sigA>>21 );\r
-    sigA <<= 9 - ( expA & 1 );\r
-    sigZ =\r
-        softfloat_estimateDiv128To64( sigA, 0, (uint_fast64_t) sigZ32<<32 )\r
-            + ( (uint_fast64_t) sigZ32<<30 );\r
-    if ( ( sigZ & 0x1FF ) <= 5 ) {\r
-        term = softfloat_mul64To128( sigZ, sigZ );\r
-        rem = softfloat_sub128( sigA, 0, term.v64, term.v0 );\r
-        while ( UINT64_C( 0x8000000000000000 ) <= rem.v64 ) {\r
-            --sigZ;\r
-            rem =\r
-                softfloat_add128(\r
-                    rem.v64, rem.v0, sigZ>>63, (uint64_t) ( sigZ<<1 ) );\r
-        }\r
-        sigZ |= ( ( rem.v64 | rem.v0 ) != 0 );\r
-    }\r
-    return softfloat_roundPackToF64( 0, expZ, sigZ );\r
- invalid:\r
-    softfloat_raiseFlags( softfloat_flag_invalid );\r
-    uiZ = defaultNaNF64UI;\r
- uiZ:\r
-    uZ.ui = uiZ;\r
-    return uZ.f;\r
-\r
-}\r
-\r