diff options
| -rw-r--r-- | lib/libm/arch/vax/n_cbrt.S | 15 | ||||
| -rw-r--r-- | lib/libm/arch/vax/n_sqrt.S | 8 |
2 files changed, 7 insertions, 16 deletions
diff --git a/lib/libm/arch/vax/n_cbrt.S b/lib/libm/arch/vax/n_cbrt.S index 2d7c9676f7c..dd03a8fa229 100644 --- a/lib/libm/arch/vax/n_cbrt.S +++ b/lib/libm/arch/vax/n_cbrt.S @@ -1,4 +1,4 @@ -/* $OpenBSD: n_cbrt.S,v 1.3 2008/05/21 20:37:10 miod Exp $ */ +/* $OpenBSD: n_cbrt.S,v 1.4 2008/09/16 22:13:12 martynas Exp $ */ /* $NetBSD: n_cbrt.S,v 1.1 1995/10/10 23:40:26 ragge Exp $ */ /* * Copyright (c) 1985, 1993 @@ -42,22 +42,17 @@ */ .text _ALIGN_TEXT -ALTENTRY(d_cbrt) ENTRY(cbrt, R2|R3|R4|R5|R6|R7) movq 4(ap),r0 # r0 = argument x - jmp dcbrt2 -ENTRY(dcbrt, R2|R3|R4|R5|R6|R7) - movq *4(ap),r0 # r0 = argument x - -dcbrt2: bicw3 $0x807f,r0,r2 # biased exponent of x - jeql return # dcbrt(0)=0 dcbrt(res)=res. operand + bicw3 $0x807f,r0,r2 # biased exponent of x + jeql return # cbrt(0)=0 cbrt(res)=res. operand bicw3 $0x7fff,r0,ap # ap has sign(x) xorw2 ap,r0 # r0 is abs(x) movl r0,r2 # r2 has abs(x) rotl $16,r2,r2 # r2 = |x| with bits unscrambled - divl2 $3,r2 # rough dcbrt with bias/3 + divl2 $3,r2 # rough cbrt with bias/3 addl2 B,r2 # restore bias, diminish fraction - rotl $16,r2,r2 # r2=|q|=|dcbrt| to 5 bits + rotl $16,r2,r2 # r2=|q|=|cbrt| to 5 bits mulf3 r2,r2,r3 # r3 =qq divf2 r0,r3 # r3 = qq/x mulf2 r2,r3 diff --git a/lib/libm/arch/vax/n_sqrt.S b/lib/libm/arch/vax/n_sqrt.S index 8117544706e..5050c9fefc5 100644 --- a/lib/libm/arch/vax/n_sqrt.S +++ b/lib/libm/arch/vax/n_sqrt.S @@ -1,4 +1,4 @@ -/* $OpenBSD: n_sqrt.S,v 1.4 2008/06/21 08:26:19 martynas Exp $ */ +/* $OpenBSD: n_sqrt.S,v 1.5 2008/09/16 22:13:12 martynas Exp $ */ /* $NetBSD: n_sqrt.S,v 1.1 1995/10/10 23:40:29 ragge Exp $ */ /* * Copyright (c) 1985, 1993 @@ -42,12 +42,8 @@ * W. Kahan's magic square root * coded by Heidi Stettner and revised by Emile LeBlanc 8/18/82 * - * entry points:d_sqrt address of double arg is on the stack - * sqrt double arg is on the stack + * entry points: sqrt double arg is on the stack */ -ENTRY(d_sqrt, R2|R3|R4|R5) - movq *4(ap),r0 - jmp dsqrt2 ENTRY(sqrt, R2|R3|R4|R5) movq 4(ap),r0 dsqrt2: bicw3 $0x807f,r0,r2 # check exponent of input |