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https://github.com/bytecodealliance/wasm-micro-runtime.git
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5e196253f6
Add registration of libc-wasi to 'wasi_snapshot_preview1' to support cargo-wasi change zephyr build method from cmake to west fix problem when preserve space for local vars fix wasi authority problem
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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int intToStr(int x, char* str, int str_len, int digit);
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int get_pow(int x, int y);
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int32_t calculate_native(int32_t n, int32_t func1, int32_t func2);
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//
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// Primitive parameters functions
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//
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float generate_float(int iteration, double seed1, float seed2)
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{
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float ret;
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printf ("calling into WASM function: %s\n", __FUNCTION__);
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for (int i=0; i<iteration; i++){
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ret += 1.0f/seed1 + seed2;
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}
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return ret;
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}
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// Converts a floating-point/double number to a string.
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// intToStr() is implemented outside wasm app
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void float_to_string(float n, char* res, int res_size, int afterpoint)
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{
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printf ("calling into WASM function: %s\n", __FUNCTION__);
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// Extract integer part
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int ipart = (int)n;
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// Extract floating part
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float fpart = n - (float)ipart;
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// convert integer part to string
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int i = intToStr(ipart, res, res_size, 0);
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// check for display option after point
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if (afterpoint != 0) {
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res[i] = '.'; // add dot
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// Get the value of fraction part upto given no.
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// of points after dot. The third parameter
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// is needed to handle cases like 233.007
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fpart = fpart * get_pow(10, afterpoint);
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intToStr((int)fpart, res + i + 1, sizeof(res + i + 1), afterpoint);
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}
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}
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int32_t mul7(int32_t n)
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{
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printf ("calling into WASM function: %s,", __FUNCTION__);
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n = n * 7;
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printf (" %s return %d \n", __FUNCTION__, n);
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return n;
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}
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int32_t mul5(int32_t n)
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{
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printf ("calling into WASM function: %s,", __FUNCTION__);
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n = n * 5;
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printf (" %s return %d \n", __FUNCTION__, n);
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return n;
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}
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int32_t calculate(int32_t n)
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{
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printf ("calling into WASM function: %s\n", __FUNCTION__);
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int32_t (*f1)(int32_t) = &mul5;
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int32_t (*f2)(int32_t) = &mul7;
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return calculate_native(n, (uint32_t)f1, (uint32_t)f2);
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}
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