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Annotation of 43BSD/usr.lib/liboldnm/sinh.s, revision 1.1.1.1

1.1       root        1: #
                      2: # Copyright (c) 1980 Regents of the University of California.
                      3: # All rights reserved.  The Berkeley software License Agreement
                      4: # specifies the terms and conditions for redistribution.
                      5: #
                      6: #      @(#)sinh.s      5.1 (Berkeley) 5/8/85
                      7: # 
                      8: #
                      9: # double _sinh(arg)
                     10: # double _cosh(arg)
                     11: # double arg
                     12: # method: compute from exp except for sinh where -.5<arg<.5
                     13: # then a polynimial approx. is uded
                     14: # JF Jarvis, August 12,1978
                     15: .globl _sinh
                     16: .globl _cosh
                     17: .globl _exp
                     18: .text
                     19: .align 1
                     20: _sinh:
                     21:        .word   0x0c0
                     22:        bispsw  $0xe0
                     23:        movd    4(ap),r6
                     24:        cmpd    r6,$0d0.5e+0
                     25:        jgeq    expfrm
                     26:        cmpd    r6,$0d-0.5e+0
                     27:        jleq    expfrm
                     28:        muld3   r6,r6,r0        # Hart&Cheney SINH 1985
                     29:        polyd   r0,$5,pcoef
                     30:        muld2   r6,r0
                     31:        ret
                     32: expfrm:
                     33:        movd    r6,-(sp)        # sinh(x)=(exp(x)-exp(-x))/2
                     34:        calls   $2,_exp
                     35:        divd3   r0,$0d1.0e+0,r2
                     36:        subd2   r2,r0
                     37:        muld2   $0d0.5e+0,r0
                     38:        ret
                     39: .align 1
                     40: _cosh:
                     41:        .word   0x0
                     42:        bispsw  $0xe0
                     43:        movd    4(ap),-(sp)
                     44:        calls   $2,_exp
                     45:        divd3   r0,$0d1.0e+0,r2
                     46:        addd2   r2,r0
                     47:        muld2   $0d0.5e+0,r0
                     48:        ret
                     49: .data
                     50: .align 2
                     51: pcoef:
                     52:        .double 0d0.251726188251e-7
                     53:        .double 0d0.275569807356154e-5
                     54:        .double 0d0.1984127027907999e-3
                     55:        .double 0d0.833333333307759961e-2
                     56:        .double 0d0.16666666666667212324e+0
                     57:        .double 0d0.99999999999999998116e+0

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