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/* am9511.h
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*/
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#ifndef _AM9511_H
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#define _AM9511_H
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/* Smallest and largest numbers in the AM9511 floating point
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* format. 0.5x2^-64 to 0.99999..x2^63.
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*
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* As a note: these values can be exactly computed:
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*
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* unsigned char am_small[4], am_big[4];
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* fp_put(0, -64, 0x80, 0x0000); will generate AM_SMALL
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* fp_am(am_small);
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* fp_put(0, 63, 0xff, 0xffff); will generate AM_BIG
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* fp_am(am_big);
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*/
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#define AM_SMALL 2.71051e-20
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#define AM_BIG 9.22337e+18
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#define AM_PI 3.141592
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#define AM_SR 0x80 /* service request on completion */
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#define AM_SINGLE 0x60 /* 16 bit integer */
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#define AM_DOUBLE 0x20 /* 32 bit integer */
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#define AM_FIXED 0x20 /* fixed point */
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#define AM_FLOAT 0x00 /* 32 bit float */
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#define AM_NOP 0x00 /* no operation */
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#define AM_SQRT 0x01 /* square root */
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#define AM_SIN 0x02 /* sine */
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#define AM_COS 0x03 /* cosine */
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#define AM_TAN 0x04 /* tangent */
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#define AM_ASIN 0x05 /* inverse sine */
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#define AM_ACOS 0x06 /* inverse cosine */
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#define AM_ATAN 0x07 /* inverse tangent */
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#define AM_LOG 0x08 /* common logarithm (base 10) */
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#define AM_LN 0x09 /* natural logairth (base e) */
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#define AM_EXP 0x0a /* exponential (e^x) */
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#define AM_PWR 0x0b /* power nos^tos */
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#define AM_ADD 0x0c /* add */
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#define AM_SUB 0x0d /* subtract nos-tos */
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#define AM_MUL 0x0e /* multiply, lower half */
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#define AM_DIV 0x0f /* divide nos/tos */
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#define AM_FADD 0x10 /* floating add */
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#define AM_FSUB 0x11 /* floating subtract */
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#define AM_FMUL 0x12 /* floating multiply */
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#define AM_FDIV 0x13 /* floating divide */
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#define AM_CHS 0x14 /* change sign */
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#define AM_CHSF 0x15 /* floating change sign */
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#define AM_MUU 0x16 /* multiply, upper half */
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#define AM_PTO 0x17 /* push tos to nos (copy) */
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#define AM_POP 0x18 /* pop */
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#define AM_XCH 0x19 /* exchange tos and nos */
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#define AM_PUPI 0x1a /* push pi */
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/* 0x1b */
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#define AM_FLTD 0x1c /* 32 bit to float */
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#define AM_FLTS 0x1d /* 16 bit to float */
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#define AM_FIXD 0x1e /* float to 32 bit */
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#define AM_FIXS 0x1f /* float to 16 bit */
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#define AM_BUSY 0x80 /* chip is busy */
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#define AM_SIGN 0x40 /* tos negative */
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#define AM_ZERO 0x20 /* tos zero */
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#define AM_ERR_MASK 0x1E /* mask for errors */
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#define AM_CARRY 0x01 /* carry/borrow from most significant bit */
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#define AM_ERR_NONE 0x00 /* no error */
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#define AM_ERR_DIV0 0x10 /* divide by zero */
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#define AM_ERR_NEG 0x08 /* sqrt, log of negative */
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#define AM_ERR_ARG 0x18 /* arg of asin, cos, e^x too large */
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#define AM_ERR_UND 0x04 /* underflow */
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#define AM_ERR_OVF 0x02 /* overflow */
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void* am_create(int status, int data);
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void am_push(void*, unsigned char);
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unsigned char am_pop(void*);
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unsigned char am_status(void*);
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void am_command(void*, unsigned char);
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void am_reset(void*);
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#ifdef NDEBUG
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#define am_dump(x)
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#else
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void am_dump(void*, unsigned char);
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#endif
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#endif
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